diff --git a/LICENSE.md b/LICENSE.md
index 51bbbe9e109b1c116bcadb50b1577fb925b233dc..25cd33fe7ace546c4ac3076b777ae06c7a1f6365 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -5,73 +5,52 @@ Version 3, 29 June 2007
 Copyright (C) 2007 Free Software Foundation, Inc.
 <https://fsf.org/>
 
-Everyone is permitted to copy and distribute verbatim copies of this
-license document, but changing it is not allowed.
+Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
 
 ### Preamble
 
-The GNU General Public License is a free, copyleft license for
-software and other kinds of works.
-
-The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works. By contrast,
-the GNU General Public License is intended to guarantee your freedom
-to share and change all versions of a program--to make sure it remains
-free software for all its users. We, the Free Software Foundation, use
-the GNU General Public License for most of our software; it applies
-also to any other work released this way by its authors. You can apply
-it to your programs, too.
-
-When we speak of free software, we are referring to freedom, not
-price. Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-them if you wish), that you receive source code or can get it if you
-want it, that you can change the software or use pieces of it in new
-free programs, and that you know you can do these things.
-
-To protect your rights, we need to prevent others from denying you
-these rights or asking you to surrender the rights. Therefore, you
-have certain responsibilities if you distribute copies of the
-software, or if you modify it: responsibilities to respect the freedom
-of others.
-
-For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must pass on to the recipients the same
-freedoms that you received. You must make sure that they, too, receive
-or can get the source code. And you must show them these terms so they
-know their rights.
+The GNU General Public License is a free, copyleft license for software and other kinds of works.
+
+The licenses for most software and other practical works are designed to take away your freedom to share and change the
+works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all
+versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use
+the GNU General Public License for most of our software; it applies also to any other work released this way by its
+authors. You can apply it to your programs, too.
+
+When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make
+sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive
+source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and
+that you know you can do these things.
+
+To protect your rights, we need to prevent others from denying you these rights or asking you to surrender the rights.
+Therefore, you have certain responsibilities if you distribute copies of the software, or if you modify it:
+responsibilities to respect the freedom of others.
+
+For example, if you distribute copies of such a program, whether gratis or for a fee, you must pass on to the recipients
+the same freedoms that you received. You must make sure that they, too, receive or can get the source code. And you must
+show them these terms so they know their rights.
 
 Developers that use the GNU GPL protect your rights with two steps:
-(1) assert copyright on the software, and (2) offer you this License
-giving you legal permission to copy, distribute and/or modify it.
-
-For the developers' and authors' protection, the GPL clearly explains
-that there is no warranty for this free software. For both users' and
-authors' sake, the GPL requires that modified versions be marked as
-changed, so that their problems will not be attributed erroneously to
-authors of previous versions.
-
-Some devices are designed to deny users access to install or run
-modified versions of the software inside them, although the
-manufacturer can do so. This is fundamentally incompatible with the
-aim of protecting users' freedom to change the software. The
-systematic pattern of such abuse occurs in the area of products for
-individuals to use, which is precisely where it is most unacceptable.
-Therefore, we have designed this version of the GPL to prohibit the
-practice for those products. If such problems arise substantially in
-other domains, we stand ready to extend this provision to those
-domains in future versions of the GPL, as needed to protect the
-freedom of users.
-
-Finally, every program is threatened constantly by software patents.
-States should not allow patents to restrict development and use of
-software on general-purpose computers, but in those that do, we wish
-to avoid the special danger that patents applied to a free program
-could make it effectively proprietary. To prevent this, the GPL
-assures that patents cannot be used to render the program non-free.
-
-The precise terms and conditions for copying, distribution and
-modification follow.
+(1) assert copyright on the software, and (2) offer you this License giving you legal permission to copy, distribute
+and/or modify it.
+
+For the developers' and authors' protection, the GPL clearly explains that there is no warranty for this free software.
+For both users' and authors' sake, the GPL requires that modified versions be marked as changed, so that their problems
+will not be attributed erroneously to authors of previous versions.
+
+Some devices are designed to deny users access to install or run modified versions of the software inside them, although
+the manufacturer can do so. This is fundamentally incompatible with the aim of protecting users' freedom to change the
+software. The systematic pattern of such abuse occurs in the area of products for individuals to use, which is precisely
+where it is most unacceptable. Therefore, we have designed this version of the GPL to prohibit the practice for those
+products. If such problems arise substantially in other domains, we stand ready to extend this provision to those
+domains in future versions of the GPL, as needed to protect the freedom of users.
+
+Finally, every program is threatened constantly by software patents. States should not allow patents to restrict
+development and use of software on general-purpose computers, but in those that do, we wish to avoid the special danger
+that patents applied to a free program could make it effectively proprietary. To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+The precise terms and conditions for copying, distribution and modification follow.
 
 ### TERMS AND CONDITIONS
 
@@ -79,541 +58,375 @@ modification follow.
 
 "This License" refers to version 3 of the GNU General Public License.
 
-"Copyright" also means copyright-like laws that apply to other kinds
-of works, such as semiconductor masks.
+"Copyright" also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.
 
-"The Program" refers to any copyrightable work licensed under this
-License. Each licensee is addressed as "you". "Licensees" and
+"The Program" refers to any copyrightable work licensed under this License. Each licensee is addressed as "you". "
+Licensees" and
 "recipients" may be individuals or organizations.
 
-To "modify" a work means to copy from or adapt all or part of the work
-in a fashion requiring copyright permission, other than the making of
-an exact copy. The resulting work is called a "modified version" of
-the earlier work or a work "based on" the earlier work.
-
-A "covered work" means either the unmodified Program or a work based
-on the Program.
-
-To "propagate" a work means to do anything with it that, without
-permission, would make you directly or secondarily liable for
-infringement under applicable copyright law, except executing it on a
-computer or modifying a private copy. Propagation includes copying,
-distribution (with or without modification), making available to the
-public, and in some countries other activities as well.
-
-To "convey" a work means any kind of propagation that enables other
-parties to make or receive copies. Mere interaction with a user
-through a computer network, with no transfer of a copy, is not
-conveying.
-
-An interactive user interface displays "Appropriate Legal Notices" to
-the extent that it includes a convenient and prominently visible
-feature that (1) displays an appropriate copyright notice, and (2)
-tells the user that there is no warranty for the work (except to the
-extent that warranties are provided), that licensees may convey the
-work under this License, and how to view a copy of this License. If
-the interface presents a list of user commands or options, such as a
-menu, a prominent item in the list meets this criterion.
+To "modify" a work means to copy from or adapt all or part of the work in a fashion requiring copyright permission,
+other than the making of an exact copy. The resulting work is called a "modified version" of the earlier work or a
+work "based on" the earlier work.
+
+A "covered work" means either the unmodified Program or a work based on the Program.
+
+To "propagate" a work means to do anything with it that, without permission, would make you directly or secondarily
+liable for infringement under applicable copyright law, except executing it on a computer or modifying a private copy.
+Propagation includes copying, distribution (with or without modification), making available to the public, and in some
+countries other activities as well.
+
+To "convey" a work means any kind of propagation that enables other parties to make or receive copies. Mere interaction
+with a user through a computer network, with no transfer of a copy, is not conveying.
+
+An interactive user interface displays "Appropriate Legal Notices" to the extent that it includes a convenient and
+prominently visible feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the extent that warranties are provided), that
+licensees may convey the work under this License, and how to view a copy of this License. If the interface presents a
+list of user commands or options, such as a menu, a prominent item in the list meets this criterion.
 
 #### 1. Source Code.
 
-The "source code" for a work means the preferred form of the work for
-making modifications to it. "Object code" means any non-source form of
-a work.
-
-A "Standard Interface" means an interface that either is an official
-standard defined by a recognized standards body, or, in the case of
-interfaces specified for a particular programming language, one that
-is widely used among developers working in that language.
-
-The "System Libraries" of an executable work include anything, other
-than the work as a whole, that (a) is included in the normal form of
-packaging a Major Component, but which is not part of that Major
-Component, and (b) serves only to enable use of the work with that
-Major Component, or to implement a Standard Interface for which an
-implementation is available to the public in source code form. A
+The "source code" for a work means the preferred form of the work for making modifications to it. "Object code" means
+any non-source form of a work.
+
+A "Standard Interface" means an interface that either is an official standard defined by a recognized standards body,
+or, in the case of interfaces specified for a particular programming language, one that is widely used among developers
+working in that language.
+
+The "System Libraries" of an executable work include anything, other than the work as a whole, that (a) is included in
+the normal form of packaging a Major Component, but which is not part of that Major Component, and (b) serves only to
+enable use of the work with that Major Component, or to implement a Standard Interface for which an implementation is
+available to the public in source code form. A
 "Major Component", in this context, means a major essential component
 (kernel, window system, and so on) of the specific operating system
-(if any) on which the executable work runs, or a compiler used to
-produce the work, or an object code interpreter used to run it.
-
-The "Corresponding Source" for a work in object code form means all
-the source code needed to generate, install, and (for an executable
-work) run the object code and to modify the work, including scripts to
-control those activities. However, it does not include the work's
-System Libraries, or general-purpose tools or generally available free
-programs which are used unmodified in performing those activities but
-which are not part of the work. For example, Corresponding Source
-includes interface definition files associated with source files for
-the work, and the source code for shared libraries and dynamically
-linked subprograms that the work is specifically designed to require,
-such as by intimate data communication or control flow between those
-subprograms and other parts of the work.
-
-The Corresponding Source need not include anything that users can
-regenerate automatically from other parts of the Corresponding Source.
-
-The Corresponding Source for a work in source code form is that same
-work.
+(if any) on which the executable work runs, or a compiler used to produce the work, or an object code interpreter used
+to run it.
+
+The "Corresponding Source" for a work in object code form means all the source code needed to generate, install, and (
+for an executable work) run the object code and to modify the work, including scripts to control those activities.
+However, it does not include the work's System Libraries, or general-purpose tools or generally available free programs
+which are used unmodified in performing those activities but which are not part of the work. For example, Corresponding
+Source includes interface definition files associated with source files for the work, and the source code for shared
+libraries and dynamically linked subprograms that the work is specifically designed to require, such as by intimate data
+communication or control flow between those subprograms and other parts of the work.
+
+The Corresponding Source need not include anything that users can regenerate automatically from other parts of the
+Corresponding Source.
+
+The Corresponding Source for a work in source code form is that same work.
 
 #### 2. Basic Permissions.
 
-All rights granted under this License are granted for the term of
-copyright on the Program, and are irrevocable provided the stated
-conditions are met. This License explicitly affirms your unlimited
-permission to run the unmodified Program. The output from running a
-covered work is covered by this License only if the output, given its
-content, constitutes a covered work. This License acknowledges your
-rights of fair use or other equivalent, as provided by copyright law.
-
-You may make, run and propagate covered works that you do not convey,
-without conditions so long as your license otherwise remains in force.
-You may convey covered works to others for the sole purpose of having
-them make modifications exclusively for you, or provide you with
-facilities for running those works, provided that you comply with the
-terms of this License in conveying all material for which you do not
-control copyright. Those thus making or running the covered works for
-you must do so exclusively on your behalf, under your direction and
-control, on terms that prohibit them from making any copies of your
-copyrighted material outside their relationship with you.
-
-Conveying under any other circumstances is permitted solely under the
-conditions stated below. Sublicensing is not allowed; section 10 makes
-it unnecessary.
+All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided
+the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program.
+The output from running a covered work is covered by this License only if the output, given its content, constitutes a
+covered work. This License acknowledges your rights of fair use or other equivalent, as provided by copyright law.
+
+You may make, run and propagate covered works that you do not convey, without conditions so long as your license
+otherwise remains in force. You may convey covered works to others for the sole purpose of having them make
+modifications exclusively for you, or provide you with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do not control copyright. Those thus making or running
+the covered works for you must do so exclusively on your behalf, under your direction and control, on terms that
+prohibit them from making any copies of your copyrighted material outside their relationship with you.
+
+Conveying under any other circumstances is permitted solely under the conditions stated below. Sublicensing is not
+allowed; section 10 makes it unnecessary.
 
 #### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
 
-No covered work shall be deemed part of an effective technological
-measure under any applicable law fulfilling obligations under article
-11 of the WIPO copyright treaty adopted on 20 December 1996, or
-similar laws prohibiting or restricting circumvention of such
-measures.
+No covered work shall be deemed part of an effective technological measure under any applicable law fulfilling
+obligations under article 11 of the WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or
+restricting circumvention of such measures.
 
-When you convey a covered work, you waive any legal power to forbid
-circumvention of technological measures to the extent such
-circumvention is effected by exercising rights under this License with
-respect to the covered work, and you disclaim any intention to limit
-operation or modification of the work as a means of enforcing, against
-the work's users, your or third parties' legal rights to forbid
-circumvention of technological measures.
+When you convey a covered work, you waive any legal power to forbid circumvention of technological measures to the
+extent such circumvention is effected by exercising rights under this License with respect to the covered work, and you
+disclaim any intention to limit operation or modification of the work as a means of enforcing, against the work's users,
+your or third parties' legal rights to forbid circumvention of technological measures.
 
 #### 4. Conveying Verbatim Copies.
 
-You may convey verbatim copies of the Program's source code as you
-receive it, in any medium, provided that you conspicuously and
-appropriately publish on each copy an appropriate copyright notice;
-keep intact all notices stating that this License and any
-non-permissive terms added in accord with section 7 apply to the code;
-keep intact all notices of the absence of any warranty; and give all
-recipients a copy of this License along with the Program.
+You may convey verbatim copies of the Program's source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate copyright notice; keep intact all notices stating
+that this License and any non-permissive terms added in accord with section 7 apply to the code; keep intact all notices
+of the absence of any warranty; and give all recipients a copy of this License along with the Program.
 
-You may charge any price or no price for each copy that you convey,
-and you may offer support or warranty protection for a fee.
+You may charge any price or no price for each copy that you convey, and you may offer support or warranty protection for
+a fee.
 
 #### 5. Conveying Modified Source Versions.
 
-You may convey a work based on the Program, or the modifications to
-produce it from the Program, in the form of source code under the
-terms of section 4, provided that you also meet all of these
-conditions:
-
--   a) The work must carry prominent notices stating that you modified
-    it, and giving a relevant date.
--   b) The work must carry prominent notices stating that it is
-    released under this License and any conditions added under
-    section 7. This requirement modifies the requirement in section 4
-    to "keep intact all notices".
--   c) You must license the entire work, as a whole, under this
-    License to anyone who comes into possession of a copy. This
-    License will therefore apply, along with any applicable section 7
-    additional terms, to the whole of the work, and all its parts,
-    regardless of how they are packaged. This License gives no
-    permission to license the work in any other way, but it does not
-    invalidate such permission if you have separately received it.
--   d) If the work has interactive user interfaces, each must display
-    Appropriate Legal Notices; however, if the Program has interactive
-    interfaces that do not display Appropriate Legal Notices, your
-    work need not make them do so.
-
-A compilation of a covered work with other separate and independent
-works, which are not by their nature extensions of the covered work,
-and which are not combined with it such as to form a larger program,
-in or on a volume of a storage or distribution medium, is called an
-"aggregate" if the compilation and its resulting copyright are not
-used to limit the access or legal rights of the compilation's users
-beyond what the individual works permit. Inclusion of a covered work
-in an aggregate does not cause this License to apply to the other
-parts of the aggregate.
+You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source
+code under the terms of section 4, provided that you also meet all of these conditions:
+
+- a) The work must carry prominent notices stating that you modified it, and giving a relevant date.
+- b) The work must carry prominent notices stating that it is released under this License and any conditions added under
+  section 7. This requirement modifies the requirement in section 4 to "keep intact all notices".
+- c) You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy.
+  This License will therefore apply, along with any applicable section 7 additional terms, to the whole of the work, and
+  all its parts, regardless of how they are packaged. This License gives no permission to license the work in any other
+  way, but it does not invalidate such permission if you have separately received it.
+- d) If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the Program
+  has interactive interfaces that do not display Appropriate Legal Notices, your work need not make them do so.
+
+A compilation of a covered work with other separate and independent works, which are not by their nature extensions of
+the covered work, and which are not combined with it such as to form a larger program, in or on a volume of a storage or
+distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not used to limit the access or legal rights of the
+compilation's users beyond what the individual works permit. Inclusion of a covered work in an aggregate does not cause
+this License to apply to the other parts of the aggregate.
 
 #### 6. Conveying Non-Source Forms.
 
-You may convey a covered work in object code form under the terms of
-sections 4 and 5, provided that you also convey the machine-readable
-Corresponding Source under the terms of this License, in one of these
-ways:
-
--   a) Convey the object code in, or embodied in, a physical product
-    (including a physical distribution medium), accompanied by the
-    Corresponding Source fixed on a durable physical medium
-    customarily used for software interchange.
--   b) Convey the object code in, or embodied in, a physical product
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-    written offer, valid for at least three years and valid for as
-    long as you offer spare parts or customer support for that product
-    model, to give anyone who possesses the object code either (1) a
-    copy of the Corresponding Source for all the software in the
-    product that is covered by this License, on a durable physical
-    medium customarily used for software interchange, for a price no
-    more than your reasonable cost of physically performing this
-    conveying of source, or (2) access to copy the Corresponding
-    Source from a network server at no charge.
--   c) Convey individual copies of the object code with a copy of the
-    written offer to provide the Corresponding Source. This
-    alternative is allowed only occasionally and noncommercially, and
-    only if you received the object code with such an offer, in accord
-    with subsection 6b.
--   d) Convey the object code by offering access from a designated
-    place (gratis or for a charge), and offer equivalent access to the
-    Corresponding Source in the same way through the same place at no
-    further charge. You need not require recipients to copy the
-    Corresponding Source along with the object code. If the place to
-    copy the object code is a network server, the Corresponding Source
-    may be on a different server (operated by you or a third party)
-    that supports equivalent copying facilities, provided you maintain
-    clear directions next to the object code saying where to find the
-    Corresponding Source. Regardless of what server hosts the
-    Corresponding Source, you remain obligated to ensure that it is
-    available for as long as needed to satisfy these requirements.
--   e) Convey the object code using peer-to-peer transmission,
-    provided you inform other peers where the object code and
-    Corresponding Source of the work are being offered to the general
-    public at no charge under subsection 6d.
-
-A separable portion of the object code, whose source code is excluded
-from the Corresponding Source as a System Library, need not be
-included in conveying the object code work.
-
-A "User Product" is either (1) a "consumer product", which means any
-tangible personal property which is normally used for personal,
-family, or household purposes, or (2) anything designed or sold for
-incorporation into a dwelling. In determining whether a product is a
-consumer product, doubtful cases shall be resolved in favor of
-coverage. For a particular product received by a particular user,
-"normally used" refers to a typical or common use of that class of
-product, regardless of the status of the particular user or of the way
-in which the particular user actually uses, or expects or is expected
-to use, the product. A product is a consumer product regardless of
-whether the product has substantial commercial, industrial or
-non-consumer uses, unless such uses represent the only significant
-mode of use of the product.
-
-"Installation Information" for a User Product means any methods,
-procedures, authorization keys, or other information required to
-install and execute modified versions of a covered work in that User
-Product from a modified version of its Corresponding Source. The
-information must suffice to ensure that the continued functioning of
-the modified object code is in no case prevented or interfered with
-solely because modification has been made.
-
-If you convey an object code work under this section in, or with, or
-specifically for use in, a User Product, and the conveying occurs as
-part of a transaction in which the right of possession and use of the
-User Product is transferred to the recipient in perpetuity or for a
-fixed term (regardless of how the transaction is characterized), the
-Corresponding Source conveyed under this section must be accompanied
-by the Installation Information. But this requirement does not apply
-if neither you nor any third party retains the ability to install
-modified object code on the User Product (for example, the work has
-been installed in ROM).
-
-The requirement to provide Installation Information does not include a
-requirement to continue to provide support service, warranty, or
-updates for a work that has been modified or installed by the
-recipient, or for the User Product in which it has been modified or
-installed. Access to a network may be denied when the modification
-itself materially and adversely affects the operation of the network
-or violates the rules and protocols for communication across the
+You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License, in one of these ways:
+
+- a) Convey the object code in, or embodied in, a physical product
+  (including a physical distribution medium), accompanied by the Corresponding Source fixed on a durable physical medium
+  customarily used for software interchange.
+- b) Convey the object code in, or embodied in, a physical product
+  (including a physical distribution medium), accompanied by a written offer, valid for at least three years and valid
+  for as long as you offer spare parts or customer support for that product model, to give anyone who possesses the
+  object code either (1) a copy of the Corresponding Source for all the software in the product that is covered by this
+  License, on a durable physical medium customarily used for software interchange, for a price no more than your
+  reasonable cost of physically performing this conveying of source, or (2) access to copy the Corresponding Source from
+  a network server at no charge.
+- c) Convey individual copies of the object code with a copy of the written offer to provide the Corresponding Source.
+  This alternative is allowed only occasionally and noncommercially, and only if you received the object code with such
+  an offer, in accord with subsection 6b.
+- d) Convey the object code by offering access from a designated place (gratis or for a charge), and offer equivalent
+  access to the Corresponding Source in the same way through the same place at no further charge. You need not require
+  recipients to copy the Corresponding Source along with the object code. If the place to copy the object code is a
+  network server, the Corresponding Source may be on a different server (operated by you or a third party)
+  that supports equivalent copying facilities, provided you maintain clear directions next to the object code saying
+  where to find the Corresponding Source. Regardless of what server hosts the Corresponding Source, you remain obligated
+  to ensure that it is available for as long as needed to satisfy these requirements.
+- e) Convey the object code using peer-to-peer transmission, provided you inform other peers where the object code and
+  Corresponding Source of the work are being offered to the general public at no charge under subsection 6d.
+
+A separable portion of the object code, whose source code is excluded from the Corresponding Source as a System Library,
+need not be included in conveying the object code work.
+
+A "User Product" is either (1) a "consumer product", which means any tangible personal property which is normally used
+for personal, family, or household purposes, or (2) anything designed or sold for incorporation into a dwelling. In
+determining whether a product is a consumer product, doubtful cases shall be resolved in favor of coverage. For a
+particular product received by a particular user,
+"normally used" refers to a typical or common use of that class of product, regardless of the status of the particular
+user or of the way in which the particular user actually uses, or expects or is expected to use, the product. A product
+is a consumer product regardless of whether the product has substantial commercial, industrial or non-consumer uses,
+unless such uses represent the only significant mode of use of the product.
+
+"Installation Information" for a User Product means any methods, procedures, authorization keys, or other information
+required to install and execute modified versions of a covered work in that User Product from a modified version of its
+Corresponding Source. The information must suffice to ensure that the continued functioning of the modified object code
+is in no case prevented or interfered with solely because modification has been made.
+
+If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the
+conveying occurs as part of a transaction in which the right of possession and use of the User Product is transferred to
+the recipient in perpetuity or for a fixed term (regardless of how the transaction is characterized), the Corresponding
+Source conveyed under this section must be accompanied by the Installation Information. But this requirement does not
+apply if neither you nor any third party retains the ability to install modified object code on the User Product (for
+example, the work has been installed in ROM).
+
+The requirement to provide Installation Information does not include a requirement to continue to provide support
+service, warranty, or updates for a work that has been modified or installed by the recipient, or for the User Product
+in which it has been modified or installed. Access to a network may be denied when the modification itself materially
+and adversely affects the operation of the network or violates the rules and protocols for communication across the
 network.
 
-Corresponding Source conveyed, and Installation Information provided,
-in accord with this section must be in a format that is publicly
-documented (and with an implementation available to the public in
-source code form), and must require no special password or key for
-unpacking, reading or copying.
+Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format
+that is publicly documented (and with an implementation available to the public in source code form), and must require
+no special password or key for unpacking, reading or copying.
 
 #### 7. Additional Terms.
 
-"Additional permissions" are terms that supplement the terms of this
-License by making exceptions from one or more of its conditions.
-Additional permissions that are applicable to the entire Program shall
-be treated as though they were included in this License, to the extent
-that they are valid under applicable law. If additional permissions
-apply only to part of the Program, that part may be used separately
-under those permissions, but the entire Program remains governed by
-this License without regard to the additional permissions.
-
-When you convey a copy of a covered work, you may at your option
-remove any additional permissions from that copy, or from any part of
-it. (Additional permissions may be written to require their own
-removal in certain cases when you modify the work.) You may place
-additional permissions on material, added by you to a covered work,
-for which you have or can give appropriate copyright permission.
-
-Notwithstanding any other provision of this License, for material you
-add to a covered work, you may (if authorized by the copyright holders
-of that material) supplement the terms of this License with terms:
-
--   a) Disclaiming warranty or limiting liability differently from the
-    terms of sections 15 and 16 of this License; or
--   b) Requiring preservation of specified reasonable legal notices or
-    author attributions in that material or in the Appropriate Legal
-    Notices displayed by works containing it; or
--   c) Prohibiting misrepresentation of the origin of that material,
-    or requiring that modified versions of such material be marked in
-    reasonable ways as different from the original version; or
--   d) Limiting the use for publicity purposes of names of licensors
-    or authors of the material; or
--   e) Declining to grant rights under trademark law for use of some
-    trade names, trademarks, or service marks; or
--   f) Requiring indemnification of licensors and authors of that
-    material by anyone who conveys the material (or modified versions
-    of it) with contractual assumptions of liability to the recipient,
-    for any liability that these contractual assumptions directly
-    impose on those licensors and authors.
-
-All other non-permissive additional terms are considered "further
-restrictions" within the meaning of section 10. If the Program as you
-received it, or any part of it, contains a notice stating that it is
-governed by this License along with a term that is a further
-restriction, you may remove that term. If a license document contains
-a further restriction but permits relicensing or conveying under this
-License, you may add to a covered work material governed by the terms
-of that license document, provided that the further restriction does
-not survive such relicensing or conveying.
-
-If you add terms to a covered work in accord with this section, you
-must place, in the relevant source files, a statement of the
-additional terms that apply to those files, or a notice indicating
-where to find the applicable terms.
-
-Additional terms, permissive or non-permissive, may be stated in the
-form of a separately written license, or stated as exceptions; the
-above requirements apply either way.
+"Additional permissions" are terms that supplement the terms of this License by making exceptions from one or more of
+its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were
+included in this License, to the extent that they are valid under applicable law. If additional permissions apply only
+to part of the Program, that part may be used separately under those permissions, but the entire Program remains
+governed by this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or
+from any part of it. (Additional permissions may be written to require their own removal in certain cases when you
+modify the work.) You may place additional permissions on material, added by you to a covered work, for which you have
+or can give appropriate copyright permission.
+
+Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by
+the copyright holders of that material) supplement the terms of this License with terms:
+
+- a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or
+- b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in the
+  Appropriate Legal Notices displayed by works containing it; or
+- c) Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material
+  be marked in reasonable ways as different from the original version; or
+- d) Limiting the use for publicity purposes of names of licensors or authors of the material; or
+- e) Declining to grant rights under trademark law for use of some trade names, trademarks, or service marks; or
+- f) Requiring indemnification of licensors and authors of that material by anyone who conveys the material (or modified
+  versions of it) with contractual assumptions of liability to the recipient, for any liability that these contractual
+  assumptions directly impose on those licensors and authors.
+
+All other non-permissive additional terms are considered "further restrictions" within the meaning of section 10. If the
+Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with
+a term that is a further restriction, you may remove that term. If a license document contains a further restriction but
+permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of
+that license document, provided that the further restriction does not survive such relicensing or conveying.
+
+If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a
+statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as
+exceptions; the above requirements apply either way.
 
 #### 8. Termination.
 
-You may not propagate or modify a covered work except as expressly
-provided under this License. Any attempt otherwise to propagate or
-modify it is void, and will automatically terminate your rights under
-this License (including any patent licenses granted under the third
-paragraph of section 11).
-
-However, if you cease all violation of this License, then your license
-from a particular copyright holder is reinstated (a) provisionally,
-unless and until the copyright holder explicitly and finally
-terminates your license, and (b) permanently, if the copyright holder
-fails to notify you of the violation by some reasonable means prior to
-60 days after the cessation.
-
-Moreover, your license from a particular copyright holder is
-reinstated permanently if the copyright holder notifies you of the
-violation by some reasonable means, this is the first time you have
-received notice of violation of this License (for any work) from that
-copyright holder, and you cure the violation prior to 30 days after
-your receipt of the notice.
-
-Termination of your rights under this section does not terminate the
-licenses of parties who have received copies or rights from you under
-this License. If your rights have been terminated and not permanently
-reinstated, you do not qualify to receive new licenses for the same
-material under section 10.
+You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to
+propagate or modify it is void, and will automatically terminate your rights under this License (including any patent
+licenses granted under the third paragraph of section 11).
+
+However, if you cease all violation of this License, then your license from a particular copyright holder is
+reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license,
+and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60
+days after the cessation.
+
+Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you
+of the violation by some reasonable means, this is the first time you have received notice of violation of this
+License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the
+notice.
+
+Termination of your rights under this section does not terminate the licenses of parties who have received copies or
+rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not
+qualify to receive new licenses for the same material under section 10.
 
 #### 9. Acceptance Not Required for Having Copies.
 
-You are not required to accept this License in order to receive or run
-a copy of the Program. Ancillary propagation of a covered work
-occurring solely as a consequence of using peer-to-peer transmission
-to receive a copy likewise does not require acceptance. However,
-nothing other than this License grants you permission to propagate or
-modify any covered work. These actions infringe copyright if you do
-not accept this License. Therefore, by modifying or propagating a
+You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a
+covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not
+require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered
+work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a
 covered work, you indicate your acceptance of this License to do so.
 
 #### 10. Automatic Licensing of Downstream Recipients.
 
-Each time you convey a covered work, the recipient automatically
-receives a license from the original licensors, to run, modify and
-propagate that work, subject to this License. You are not responsible
-for enforcing compliance by third parties with this License.
-
-An "entity transaction" is a transaction transferring control of an
-organization, or substantially all assets of one, or subdividing an
-organization, or merging organizations. If propagation of a covered
-work results from an entity transaction, each party to that
-transaction who receives a copy of the work also receives whatever
-licenses to the work the party's predecessor in interest had or could
-give under the previous paragraph, plus a right to possession of the
-Corresponding Source of the work from the predecessor in interest, if
-the predecessor has it or can get it with reasonable efforts.
-
-You may not impose any further restrictions on the exercise of the
-rights granted or affirmed under this License. For example, you may
-not impose a license fee, royalty, or other charge for exercise of
-rights granted under this License, and you may not initiate litigation
-(including a cross-claim or counterclaim in a lawsuit) alleging that
-any patent claim is infringed by making, using, selling, offering for
-sale, or importing the Program or any portion of it.
+Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run,
+modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third
+parties with this License.
+
+An "entity transaction" is a transaction transferring control of an organization, or substantially all assets of one, or
+subdividing an organization, or merging organizations. If propagation of a covered work results from an entity
+transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work
+the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with
+reasonable efforts.
+
+You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For
+example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License,
+and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using,
+selling, offering for sale, or importing the Program or any portion of it.
 
 #### 11. Patents.
 
-A "contributor" is a copyright holder who authorizes use under this
-License of the Program or a work on which the Program is based. The
-work thus licensed is called the contributor's "contributor version".
-
-A contributor's "essential patent claims" are all patent claims owned
-or controlled by the contributor, whether already acquired or
-hereafter acquired, that would be infringed by some manner, permitted
-by this License, of making, using, or selling its contributor version,
-but do not include claims that would be infringed only as a
-consequence of further modification of the contributor version. For
-purposes of this definition, "control" includes the right to grant
-patent sublicenses in a manner consistent with the requirements of
-this License.
-
-Each contributor grants you a non-exclusive, worldwide, royalty-free
-patent license under the contributor's essential patent claims, to
-make, use, sell, offer for sale, import and otherwise run, modify and
-propagate the contents of its contributor version.
-
-In the following three paragraphs, a "patent license" is any express
-agreement or commitment, however denominated, not to enforce a patent
-(such as an express permission to practice a patent or covenant not to
-sue for patent infringement). To "grant" such a patent license to a
-party means to make such an agreement or commitment not to enforce a
-patent against the party.
-
-If you convey a covered work, knowingly relying on a patent license,
-and the Corresponding Source of the work is not available for anyone
-to copy, free of charge and under the terms of this License, through a
-publicly available network server or other readily accessible means,
-then you must either (1) cause the Corresponding Source to be so
-available, or (2) arrange to deprive yourself of the benefit of the
-patent license for this particular work, or (3) arrange, in a manner
-consistent with the requirements of this License, to extend the patent
-license to downstream recipients. "Knowingly relying" means you have
-actual knowledge that, but for the patent license, your conveying the
-covered work in a country, or your recipient's use of the covered work
-in a country, would infringe one or more identifiable patents in that
-country that you have reason to believe are valid.
-
-If, pursuant to or in connection with a single transaction or
-arrangement, you convey, or propagate by procuring conveyance of, a
-covered work, and grant a patent license to some of the parties
-receiving the covered work authorizing them to use, propagate, modify
-or convey a specific copy of the covered work, then the patent license
-you grant is automatically extended to all recipients of the covered
-work and works based on it.
-
-A patent license is "discriminatory" if it does not include within the
-scope of its coverage, prohibits the exercise of, or is conditioned on
-the non-exercise of one or more of the rights that are specifically
-granted under this License. You may not convey a covered work if you
-are a party to an arrangement with a third party that is in the
-business of distributing software, under which you make payment to the
-third party based on the extent of your activity of conveying the
-work, and under which the third party grants, to any of the parties
-who would receive the covered work from you, a discriminatory patent
-license (a) in connection with copies of the covered work conveyed by
-you (or copies made from those copies), or (b) primarily for and in
-connection with specific products or compilations that contain the
-covered work, unless you entered into that arrangement, or that patent
-license was granted, prior to 28 March 2007.
-
-Nothing in this License shall be construed as excluding or limiting
-any implied license or other defenses to infringement that may
-otherwise be available to you under applicable patent law.
+A "contributor" is a copyright holder who authorizes use under this License of the Program or a work on which the
+Program is based. The work thus licensed is called the contributor's "contributor version".
+
+A contributor's "essential patent claims" are all patent claims owned or controlled by the contributor, whether already
+acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or
+selling its contributor version, but do not include claims that would be infringed only as a consequence of further
+modification of the contributor version. For purposes of this definition, "control" includes the right to grant patent
+sublicenses in a manner consistent with the requirements of this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential
+patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its
+contributor version.
+
+In the following three paragraphs, a "patent license" is any express agreement or commitment, however denominated, not
+to enforce a patent
+(such as an express permission to practice a patent or covenant not to sue for patent infringement). To "grant" such a
+patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not
+available for anyone to copy, free of charge and under the terms of this License, through a publicly available network
+server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available,
+or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a
+manner consistent with the requirements of this License, to extend the patent license to downstream recipients. "
+Knowingly relying" means you have actual knowledge that, but for the patent license, your conveying the covered work in
+a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in
+that country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring
+conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing
+them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is
+automatically extended to all recipients of the covered work and works based on it.
+
+A patent license is "discriminatory" if it does not include within the scope of its coverage, prohibits the exercise of,
+or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You
+may not convey a covered work if you are a party to an arrangement with a third party that is in the business of
+distributing software, under which you make payment to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a
+discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from
+those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered
+work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to
+infringement that may otherwise be available to you under applicable patent law.
 
 #### 12. No Surrender of Others' Freedom.
 
-If conditions are imposed on you (whether by court order, agreement or
-otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License. If you cannot convey a
-covered work so as to satisfy simultaneously your obligations under
-this License and any other pertinent obligations, then as a
-consequence you may not convey it at all. For example, if you agree to
-terms that obligate you to collect a royalty for further conveying
-from those to whom you convey the Program, the only way you could
-satisfy both those terms and this License would be to refrain entirely
-from conveying the Program.
+If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this
+License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to
+satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence
+you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further
+conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License
+would be to refrain entirely from conveying the Program.
 
 #### 13. Use with the GNU Affero General Public License.
 
-Notwithstanding any other provision of this License, you have
-permission to link or combine any covered work with a work licensed
-under version 3 of the GNU Affero General Public License into a single
-combined work, and to convey the resulting work. The terms of this
-License will continue to apply to the part which is the covered work,
-but the special requirements of the GNU Affero General Public License,
-section 13, concerning interaction through a network will apply to the
-combination as such.
+Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work
+licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the
+resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special
+requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply
+to the combination as such.
 
 #### 14. Revised Versions of this License.
 
-The Free Software Foundation may publish revised and/or new versions
-of the GNU General Public License from time to time. Such new versions
-will be similar in spirit to the present version, but may differ in
-detail to address new problems or concerns.
-
-Each version is given a distinguishing version number. If the Program
-specifies that a certain numbered version of the GNU General Public
-License "or any later version" applies to it, you have the option of
-following the terms and conditions either of that numbered version or
-of any later version published by the Free Software Foundation. If the
-Program does not specify a version number of the GNU General Public
-License, you may choose any version ever published by the Free
-Software Foundation.
-
-If the Program specifies that a proxy can decide which future versions
-of the GNU General Public License can be used, that proxy's public
-statement of acceptance of a version permanently authorizes you to
-choose that version for the Program.
-
-Later license versions may give you additional or different
-permissions. However, no additional obligations are imposed on any
-author or copyright holder as a result of your choosing to follow a
-later version.
+The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to
+time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new
+problems or concerns.
+
+Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the
+GNU General Public License "or any later version" applies to it, you have the option of following the terms and
+conditions either of that numbered version or of any later version published by the Free Software Foundation. If the
+Program does not specify a version number of the GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used,
+that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the
+Program.
+
+Later license versions may give you additional or different permissions. However, no additional obligations are imposed
+on any author or copyright holder as a result of your choosing to follow a later version.
 
 #### 15. Disclaimer of Warranty.
 
-THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
-APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
-HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
-WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
-PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
-DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
-CORRECTION.
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING
+THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
+IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU
+ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
 
 #### 16. Limitation of Liability.
 
-IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
-CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
-ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
-NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
-LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
-TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
-PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO
+MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,
+INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO
+LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
+TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
 
 #### 17. Interpretation of Sections 15 and 16.
 
-If the disclaimer of warranty and limitation of liability provided
-above cannot be given local legal effect according to their terms,
-reviewing courts shall apply local law that most closely approximates
-an absolute waiver of all civil liability in connection with the
-Program, unless a warranty or assumption of liability accompanies a
-copy of the Program in return for a fee.
+If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to
+their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil
+liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program
+in return for a fee.
 
 END OF TERMS AND CONDITIONS
diff --git a/models/FileMove.py b/models/FileMove.py
index a71e909c1db04431e0e10b781bc32c17d74f3e06..d1a6870ab68f2dfc2afa14be4b937af76ba46118 100644
--- a/models/FileMove.py
+++ b/models/FileMove.py
@@ -16,7 +16,7 @@ class FileMove:
             if not os.path.exists(self.intermediate):
                 os.rename(self.source, self.intermediate)
             else:
-                raise Exception("intermediate already exists", self)
+                raise Exception("intermediate already exists: {0}".format(self))
 
     def move_target(self, dry_run: bool = True):
         if dry_run:
@@ -30,4 +30,8 @@ class FileMove:
             if not os.path.exists(self.target):
                 os.rename(self.intermediate, self.target)
             else:
-                raise Exception("target already exists", self)
+                raise Exception("target already exists: {0}".format(self))
+
+    def __str__(self):
+        return "FileMove(source=\'{0}\', target=\'{1}\', intermediate=\'{2}\')" \
+            .format(self.source, self.target, self.intermediate)
diff --git a/models/TrackMeta.py b/models/TrackMeta.py
index b4b5936a0447f7b91d0518be1b337a5f32f4a086..956f0327ef964b0e30a774e887b83fd3dcbdd9dc 100644
--- a/models/TrackMeta.py
+++ b/models/TrackMeta.py
@@ -58,6 +58,3 @@ class TrackMeta:
         self.titlesort = titlesort
         self.tracknumber = tracknumber
         self.tracktotal = tracktotal
-
-
-
diff --git a/util/auto_str.py b/util/auto_str.py
index 09245578a34598379ae27d5fdd3e21db6f8f740c..ea3b76594f6ff9d57331f0a33b0de0376cfb38bc 100644
--- a/util/auto_str.py
+++ b/util/auto_str.py
@@ -1,8 +1,9 @@
 def auto_str(cls):
     def __str__(self):
-        return '%s(%s)' % (
+        return '{}({})'.format(
             type(self).__name__,
-            ', '.join('%s=%s' % item for item in vars(self).items())
+            ', '.join('{}={}'.format(*item) for item in vars(self).items())
         )
+
     cls.__str__ = __str__
     return cls
diff --git a/util/extract_numbers.py b/util/extract_numbers.py
index 0e28a2ac602b840e9dd62ab3d241fe4dec0aadbb..99e576066d251df1d4cd0cfbdd7d8d3fd90d522d 100644
--- a/util/extract_numbers.py
+++ b/util/extract_numbers.py
@@ -5,6 +5,9 @@ def extract_numbers(tag: str) -> Tuple[Optional[str], Optional[str]]:
     number = None
     total = None
 
+    if tag is None:
+        return number, total
+
     split = str(tag).split("/")
     if len(split) >= 1:
         number = int(split[0])