Provide a fix for "non-sloped" slopes launch/land behavior by checking the normal's components.

See merge request !634

Compressing sidedefs can break both special effects and netgame syncing, so let's get rid of it

See merge request !628

Textmap parser

See merge request !604

Fix major issue

See merge request !625

Remove Direct Draw from AppVeyor config

See merge request !622

CV_FindVar for Lua

See merge request !583

Do not save netgame-synced console variables

See merge request !623

Let the mouse move freely when a menu is open or game is paused

See merge request !617

This is a bad thing to do, because if you join a server,
your game will save the host's settings.

This reverts commit 17636ccc.

Allow 6-letter character names to be drawn with the thick font

See merge request !618

Fix MP Special Stages crashing if a player is being carried when it ends

See merge request STJr/SRB2!615

Add slots for unused sounds and remove unused sound slots

See merge request !603

Gametype name in SERVERINFO

See merge request !610

NOHW V.S. Renderer Switching

See merge request !609

Stuff I Broke: Commands

See merge request !607

Properly fix the issue that !528 tried to; let the -warp parameter work with map name

See merge request !596

Gametype ruleset changes

See merge request !585

Rework textmap parser to always read a parameter's value, even if it doesn't recognize the parameter