**Usability:** Command buttons now only append the command to the command field. The command field now supports multiple commands at once (and the commands don't need to be full 4 bytes). App should update to newer versions automatically starting from this version. 

**UI:** Fixed some visual quirks and a typo.

**Under-the-hood:** Added checking that a port is still open. Changed communication form `string`s to `byte`s. Added app action for future kiosk mode.