scattered changes from a while ago
NOTES #+option
reverse order of sizes
explicit connection method for back-end objects
safer and automatic quitting
remove dependencies on org-mode functions
better interactive debugging
don't commit if process already quit
adding README
replace flet with cl-flet
set level (mainly for playing GNUGO)
don't throw error when backend passes
two consecutive passes ends the game
calculate the final score
notes on scaling image sizes
query backend for territory
mark an overlay with a black or white cross
use new mark machinery to apply labels
don't mutate hidden state
marking captured territory when game ends