Fix pinboard sprite caching to take into account changes in mode RGB order & alpha blending
Jeffrey Lee authored
Detail:
  s/Backdrop - Change the construction of the "compact mode word" representing the screen mode to include the RGB & alpha mode flags, so that the sprite will be re-cached when switching between screen modes with different RGB & alpha settings
Admin:
  Tested on Raspberry Pi 3


Version 1.04. Tagged as 'Pinboard-1_04'
d144771a