Don't carry extra tokens into the next level if you got all 7 emeralds already

See merge request !778

Improvements to polyobjects carrying things

See merge request !772

Missing flag in S_SKIN

See merge request !781

Don't error when checking patch.valid on invalid patches

See merge request !780

1 left shifted by zero is still 1

See merge request !766

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 STJr/SRB2!775

Defuse minecarts

See merge request !776

- Fixed loss of precision in rotate carry causing objects to slide off
- Adjusted player carrying logic to make platforms less slippery
- Finally obsoleted the player-specific rotate hack now that I found the
  actual problem :]

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 STJr/SRB2!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 STJr/SRB2!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