DIST: Add .gitignore
DOC: Add README
TYPES: Add generic type definitions
UTIL: Add general utility functions and defines
LEDS: Add simple functions to manipulate the onboard LEDs
KEYS: Add simple functions to read the onboard keys
LCD22: Start implementing the Waveshare 2.2" LCD
UTIL: Add CLIP macro
LCD22: Extend drawing coordinates to int16_t
LCD22: Add lcd22_draw_big_dot()
LCD22: Add functions for drawing thick lines and circles
LCD22: Remove trailing whitespace
LCD22: Fix bug that made the LCD22 crash
LCD22: Add size/thickness parameter to dot/line/circle drawing
LCD22: Extend drawing functionality

- Rectangle
- Filled rectangle
- Filled circle
- 1bpp images
LCD22: Add lcd22_draw_bitmap_16bpp()
LCD22: Add lcd22_draw_bitmap_24bpp()
LCD22: Add functions to draw 2bpp/4bpp/8bpp palette'd images
LCD22: Remove trailing whitespace
LCD22: Add functions to draw rectangles with gradients