--------------
                              Lots of things to do
                                 --------------

  @    known bugs
  +    simple improvements
  -    important milestones
  ~    needs investigation


@  possibility of vram overflow with text
@  garbage displayed as year in the clock, possibly during edition (could not
   reproduce)

+  bitmap blending modes
+  minimize use of 7705.h and 7305.h; use local structures instead
+  partial transparency
+  gint vs. ML with 248x124 at (-60, -28)
+  call exit handlers
+  compute frequencies
+  test all font encodings

-  improve exception handler debugging information (if possible)
-  full rtc driver (time)
-  callbacks and complete user API

~  packed bit fields
~  exhaustive save for setjmp()
~  registers that need to be saved when configuring gint
~  possible bug when -O2'ing __attribute__((interrupt_handler))



Some notes
----------

Test cases for bitmap drawing:
- 32-alignment
- monochrome / gray
- small / large
- clipping
# blending modes