Added file transfer to/from computers
Now you can back up and restore individual game saves to/from a computer using the Memory Track Manager screen. See the README.md section on transferring files for instructions.
Backspace (Keypad 4) and Delete (Keypad 6) support was also added to the text input dialog to make transferring files from a compute a bit less tedious. Idea stolen from Matthias's Memory Track Manager Remix 2003 feature list.