v0.3:
- fixed read config from sdrive control
- made the command line interrupt driven for more stable communication
- added SIO debug mode
- some enhancements on the font
- fixed bug in file create, if next dir sector needed

v0.2:
- added drive deactivation function
- improved text output(scrolling, max. length)
- added page/file counter
- some bugfixes and optimizations

v0.1:
- ported to arduino UNO
- added TFT-Touchscreen support
- removed debugloader(can be done via Display now)
- removed bootloader(easy update via arduino USB and avrdude)
- removed write protection and card detect, not wired on arduino(shield)
