Model fallback

See merge request !1167

Bustable Wall and Floor flags.

See merge request STJr/SRB2!1163

Performance stats

See merge request STJr/SRB2!1186

R_FindPlane optimization

See merge request !1199

Apply step up/down to opposite plane too

See merge request !1192

Lua polyobjects

Closes #19

See merge request !1140

Make record attack's quick retry more consistent.

Closes #80

See merge request !1193

Fix OpenGL GIF recording crashing with gif_localcolortable disabled

See merge request !1196

Fix gzip failing to compress SRB2's objdump on non-Windows.

See merge request STJr/SRB2!1191

Software 3D floor rendering optimization (second attempt)

See merge request !1184

Allow JumpSpin abilities to be used with non-ability shields

Closes #277

See merge request !1146

Save netvars

See merge request STJr/SRB2!1179

Give the addfile command variable argument support.

See merge request !1176

Shader code cleanup

See merge request !1103

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

Closes #337

See merge request !1183

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

Closes #339

See merge request !1182

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

Closes #211

See merge request !1180

Don't count demo playback as visiting a level.

Closes #327 and #340

See merge request !1177

Add `-splitscreen` commandline parameter

See merge request !1175

Add P_CeilingzAtPos function

See merge request !1164

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