Set up the supermodel to clear out jqxhrs once they're done, since they take a lot of memory.
Fixed some memory leaks.
Got rid of a log.
Got rid of a bunch of magic numbers in mark scaling. Now assumed all target marks have a width of 10m by default.
Fixed the placement of wall sprites in the level editor to wait until the sprite sheet is finished being built.
Fixed some more memory leaks.
Merge branch 'master' into production