clipboard: recognise more text types, including the ones we put on the clipboard ourselves
pygame scrap: added patch, prepare for mouse clipboard handling
pygame backend: implemented mouse copy/paste, using primary selection on X11 and normal clipboard on other systems.
parallel port using pyserial parallel module (untested)
better error handling for serial and parallel port setup
fixed crash on single NUL in key buffer
fixed for clipboard handling on Windows
don't use unicurses, it would need more porting
Improved CLI on Windows using WConIO
Updated README with new dependencies