Save netvars

See merge request STJr/SRB2!1179

Give the addfile command variable argument support.

See merge request STJr/SRB2!1176

Shader code cleanup

See merge request STJr/SRB2!1103

I am going to die :D (closes #337)

Closes #337

See merge request STJr/SRB2!1183

Fix clients being able to skip credits AGAIN (closes #339)

Closes #339

See merge request STJr/SRB2!1182

A special stage is a special stage, even outside of coop.

Closes #211

See merge request STJr/SRB2!1180

Don't count demo playback as visiting a level.

Closes #327 and #340

See merge request STJr/SRB2!1177

Add `-splitscreen` commandline parameter

See merge request STJr/SRB2!1175

Add P_CeilingzAtPos function

See merge request STJr/SRB2!1164

showjoinaddress
maxplayers
joindelay
rejointimeout
resynchattempts
blamecfail
maxsend
noticedownload
downloadspeed
jointimeout
maxping
pingtimeout
servername

dumpconsistency
allowjoin
joinnextround
restrictskinchange
allowteamchange
startinglives
respawndelay
competitionboxes
allowseenames
matchboxes
specialrings
powerstones
countdowntime
touchtag
hidetime
autobalance
teamscramble
scrambleonchange
friendlyfire
overtime
pointlimit
timelimit
basenumlaps
allowexitlevel
inttime
coopstarposts
cooplives
advancemap
playersforexit
exitmove
pausepermission
respawnitemtime
respawnitem
flagtime

tv_recycler
tv_teleporter
tv_superring
tv_supersneaker
tv_invincibility
tv_jumpshield
tv_watershield
tv_ringshield
tv_forceshield
tv_bombshield
tv_1up
tv_eggmanbox

serverrunning means that you are actually the server.

Replace cvar initializers with a macro

See merge request STJr/SRB2!1178

Provide a default exe manifest

See merge request STJr/SRB2!1174

Fix some theoretical crashes when using the P_*XYMovement, P_*ZMovement, and P_RailThinker functions in Lua.

See merge request STJr/SRB2!1173

Add error message when the GDI Generic OpenGL renderer is encountered in Windows

See merge request STJr/SRB2!1172

Expose MODVERSION to Lua (because for some reason it wasn't).

See merge request STJr/SRB2!1158

Updated 16 bit momentum values to 32 bit in demos, changed demo version

See merge request STJr/SRB2!1157

Support sectors as sound origins in Lua

See merge request STJr/SRB2!1144

Autocomplete aliases in console

See merge request STJr/SRB2!1113

Expose V_GetStringColormap to Lua via v.getStringColormap().

See merge request STJr/SRB2!1111

Chain Homing with Attraction Shield

See merge request STJr/SRB2!1109

PlayerCmd Port

See merge request STJr/SRB2!1072

Update help message to mention supported file extensions, and change the description to "Load add-ons"