Fix title/card hud hooks grabbing the wrong functions

See merge request !758

2.2.1 preparation

See merge request !759

Fix CLEAR! signpost showing up in unmodded games (& add proper support for SPR2 animated signpost)

See merge request !775

Defuse minecarts

See merge request !776

Use the provided Regex strings to properly turn the entire info.h states/mobjtypes lists into strings for dehacked.c

...it's surprising what we actually missed in the states list, apart from just the missing state (yes this makes the states fix branch redundant)

Fix broken GT_ constants with custom gametypes

See merge request !769

Update credits again

See merge request !760

Also updated CMakeLists.txt, appveyor.yml and this one Xcode project file as usual

Fix game hanging on server creation/splitscreen if your name is whack

See merge request !752

Starpost config additions

See merge request !680

Fix fuckup 2

See merge request !744

Fix memory leak when caching rotsprite

See merge request !745

Make flying TNTs' explosions not so laggy the first time

See merge request !746

Reset pmomz after applying it to momz

See merge request !747

Remove flight cutoff property

See merge request !748

Don't I_Error if non base files fail to load with -file

See merge request !678

Fix splitscreen player being unable to move

See merge request !749

Automap fixes

See merge request !735

Fix color LUT using the wrong palette

See merge request !739

This is the where the extreme lag when TNT Barrels explode came from. Probably
because the sprites are big and there's four of 'em! It shouldn't matter that
these aren't rotated--they're pretty round.