Replace copyright

...e/libquassel/protocol/testutil/matchers/BomMatcherChar.kt

...libquassel/protocol/testutil/matchers/BomMatcherString.kt

...ibquassel/protocol/testutil/matchers/ByteBufferMatcher.kt

...janne/libquassel/protocol/testutil/matchers/MapMatcher.kt

.../libquassel/protocol/testutil/matchers/TemporalMatcher.kt

...e/libquassel/protocol/testutil/primitiveSerializerTest.kt

.../justjanne/libquassel/protocol/testutil/serializerTest.kt

...libquassel/protocol/testutil/signalProxySerializerTest.kt

...uassel/protocol/testutil/testPrimitiveSerializerDirect.kt

...assel/protocol/testutil/testPrimitiveSerializerVariant.kt

...in/de/justjanne/libquassel/protocol/types/SignedIdTest.kt

.../de/justjanne/libquassel/protocol/variant/QVariantTest.kt