Fix bonus items sometimes overriding apples in Snake minigame

See merge request STJr/SRB2!1134

Fix players not properly decolorizing via linedef action

See merge request STJr/SRB2!1127

Add tic and UI times to render stats

See merge request STJr/SRB2!1125

Fix a bug where adding the same mod multiple times counted towards the mod limit

See merge request STJr/SRB2!1124

Fix cv_glshearing 2 in first person

See merge request STJr/SRB2!1114

Get rid of some silly behavior with certain characters in console

See merge request STJr/SRB2!1110

Increase MAXNETNODES, show more servers in the server browser

See merge request STJr/SRB2!1106

Percent decode listserv (closes #244)

Closes #244

See merge request STJr/SRB2!1150

Fix playing back demos never working (closes #203)

Closes #203

See merge request STJr/SRB2!1149

Fix & improve objectplace

Closes #232

See merge request STJr/SRB2!1139

Avoid CV_FindNetVar returning a normal cvar (closes #251)

Closes #251

See merge request STJr/SRB2!1137

Can we just do this please? Thanks.

See merge request STJr/SRB2!1142

Remove BT_USE and PF_USEDOWN warning

See merge request STJr/SRB2!1138

PNG conversion refactoring

See merge request STJr/SRB2!675

Optimize PNG conversion

See merge request STJr/SRB2!1143

- movement speeds are scaled with player scale
- spawned objects are scaled with player scale
- command accepts argument for thing num to set

someone entertained the idea of maybe removing it, so might as well put this merge request up to see if people want it

Update credits

See merge request STJr/SRB2!1136

New STJR Intro and related changes (resolves #202)

Closes #202

See merge request STJr/SRB2!1132

(cherry picked from commit 3437b0690a3f4278e3ecc657102a126a3e2f3d13)