Mapping of Arrow-Keys

I know a lot of Androidusers even don't have arrowkeys, but for those who have a remapping would be very nice.

Pressing Arrow up should go through the history of the inputwidget as in other Desktopclients, for now it moves Focus out of the inputwidget in the current chat view and marks the last line sent there, pressing further moves the mark up.

My personal usage would rather be to use it as history scrollback, to repeat messages easily. Maybe there could be a mapping like:

• Arrow up → History Scrollback
• Shift & Arrow up → Jump into Chat view