Add language selection
Update to spec
Makefile cleanup, start implementation of nval commands (not working yet)
Add GTK test client, rework API with callbacks, make library
Start OLED support for ana-digi
Add button messages and handling
Add drawing fcuntions for lines and strings incl. three fonts
Fixes and enhancements
Reworked the bitmap functions to be of more general use
Implement PBM read file and display
Start to make cmd functions for future API
Mostly reformatting
Add CRC16 with reverse bit order
Initial edits...