The code is officially GPL.
Fixed the crashes and artifacts in the lighting code on adding a brush on the map.
The contours and occluded silhouettes really work.
Any feedback is welcome.
Some keys and console vars/commands:

L - lights tab
B - brushes tab
T - tiles tab
arrow keys scroll the screen
'~' - console

printVars
printCommands
w_temp - how many characters to draw at the cursor
r_screenWidth
r_screrenHeight
r_fullscreen