Rewrite: code cleanup
Rewrite: renamed GPIO macros
Rewrite: removed enum indirection
shuffle for inline
register buffers too large: REGISTER_COLS vs REGISTER_COL_BYTE_COUNT\nreshuffle
array dimensions were wrong
unnecessary memcpy in flipdot_display_frame
add debug symbols
let the compiler choose inline functions
use sizeof instead of constant
reuse macro
use flipdot_frame_t instead of FRAME_BYTE_COUNT
always use frame_new/old pointers
more generic Makefile
added flipdot_clear_full(): all pixels 0 -> 1 -> 0
configure display size
removed signal handler for now
added wiki URL
fixed markup
const pointer args