* Prototype of generalized snow
* documentation to flimsily justify my madness + polishing
* it is often beneficial to have the code actually work
* Review stuff
* helpers, fixes, cleanliness
* Fix generic submaps
* Lazylists, ft. lung damage on the example map
* I'm such a STUPID KITTY
* sanity courtesy of loaf
* Fix appearance of roundstart snowy turfs
NB. In some cases we go from a more complex image() to a single icon_state string and I assume this works for every case but do not care to check because of the sheer scale of extra fiddly effort. Buyer beware, not my code.
* Mulebot and vehicle updates - they now run over mobs!
* Remove unneeded safety check, and lying check
* Fix Mulebots running over themselves, fix runtime with blood.dm