Removes braindeath as IC term
Tweaks the zone rebuilding logic to prevent doors being ignored.
Fixes #4046
RCDs no longer create plating with air on it.
Fixes #3545
Major Ninja Patch
Mining fixes as it was annoying as fuck.  Also a random object with nothing in it removed.

Conflicts:
	code/modules/mining/mine_turfs.dm
Fix for mining.
Fixes #4249
Some turf cleanup and the like.  Trace gases are now properly handled by ZAS on world load.
Fixes #2485

Conflicts:
	code/game/turfs/simulated/floor_types.dm
Extra var
Tradeband and Gutterspeak now have a different font than Tradeband.
Fixes #4143

Conflicts:
	code/modules/mob/living/carbon/human/human.dm
	code/modules/mob/new_player/new_player.dm
Reverts some geometry code to a functional state.
Fixes #4045
Added resist check for holder items. Also hopefully prevented dionaea icons from remaining on a human mob.

Conflicts:
	code/modules/mob/living/carbon/monkey/diona.dm
Fixed some issues with the diona holder item, generalized it out a little. You can now deconstruct dionaea and probably put them into the washing machine.

Conflicts:
	code/modules/mob/living/carbon/monkey/diona.dm
Merge pull request #113 from SamCroswell/master

Major Ninja Patch
Adjacent didn't work, back to using get_dist.
Fix #388: Incorrect C4 timing checks.

Conflicts:
	code/game/objects/items/weapons/explosives.dm
Fix #384 (possibly): Welding a fridge/freezer does nothing.
Fix for #383 - C4 deleting fridges full of corpses.
Fix for #382 - Bombs not deleting themselves and the fridge they're in.

Conflicts:
	code/game/objects/structures/crates_lockers/closets/secure/freezer.dm
Fix #384 - Fridges can be opened while welded shut.  Also discovered this extended to secure lockers.

Conflicts:
	code/game/objects/structures/crates_lockers/closets/secure/secure_closets.dm
	html/changelog.html
Fix #381 - Poster duping