EVA update.
Merge pull request #3699 from Segrain/dev-freeze

Dev-freeze map.
Reverted both LordBraindead and my own work on firecode back to when it was stable. Fixed some issue with phantom-fires-in-pipes. Removed some useless things left over from FEA.
Updates the zone-sleeping code to account for turf changes.
Merge pull request #3729 from SkyMarshal/airfixes

More work on sleeping zones, fire fixes from master branch.
Merge branch 'master' into dev-freeze

Conflicts:
	code/ZAS/Fire.dm
	html/changelog.html
	maps/tgstation2.dmm

Signed-off-by: Mloc-Argent <colmohici@gmail.com>
Fix for ChangeTurf and update_air_properties not handling geometry changes correctly.

Signed-off-by: Mloc <colmohici@gmail.com>
Merge pull request #3739 from Mloc/zas-updateairpropfix

Fix for ChangeTurf and update_air_properties not handling geometry changes correctly.
Much better solution to the zone geometry bug.

Adds a unsim_check_directions var to simulated turfs, which is similar in use to air_check_directions but points to unsimulated or space tiles instead of open air tiles.

Signed-off-by: Mloc <colmohici@gmail.com>
Merge pull request #3743 from Mloc/zas-updateairpropfix

Much better solution to the zone geometry bug
Merge pull request #3744 from Baystation12/dev-freeze

BYOND AKBAR
Applied Arancalos fix for firedoors, no more process for them
Derp
Merge pull request #3747 from comma/master

Applied Arancalos fix for firedoors, no more process for them
Typo fix.
Typo fix.
Missing language.
Missing verb.
Examining fix.
Typecheck.