[M] When aborting a level, lives and score should remain the same as they
were before. Solution: make more dependency between the game engine and worldmap
or just backup those variables before starting a level.
-[L] intro doesn't seamlessly wrap around, might be due to the new
+[L] time runs while being in in-game menu, at least a bit (jump, go to
+ menu, wait a bit, leave menu, Tux will 'flip' to the ground,
+ instead of fall, pause mode doesn't seem to have this problem, only
+ menu)
+[L] titlescreen level doesn't seamlessly wrap around, might be due to the new
scrolling code or due to the worldmap doing the drawing
[L] Backscroll is really messed up right now :)
[L] change lispreader to throw exceptions instead of simply assert() on