Fix missing HUD item for Lua

See merge request STJr/SRB2!2383

Make the display of palette index 255 consistent between renderers

Closes #405

See merge request STJr/SRB2!2351

Fix various issues related to texture scaling

See merge request !2329

Fix #1188

Closes #1188

See merge request STJr/SRB2!2354

Substitute MT_NULL with MT_RAY in Lua

See merge request !2302

if PNG graphics support is removed, it is not netplay compatible

See merge request STJr/SRB2!2260

Shield Button Touchups

See merge request !2257

Add and use an "instant" parameter for P_SetScale

Closes #1120

See merge request !2167

Fix console not being blocked by IT_CV_STRING

See merge request STJr/SRB2!2304

New Post-Shield-Button Gamepad Defaults

See merge request STJr/SRB2!2258

zlib and libpng are now always needed

Clean up stirngop warnings

See merge request STJr/SRB2!2356

Add printf formating

See merge request !2364

Clang: clean up conditional-uninitialized warnings

See merge request !2352

Make powerups HUD toggleable via Lua (again)

See merge request STJr/SRB2!2234

Add per-player mute

See merge request !2259

Fix banlist being cleared if server fails to start

See merge request !2379

Fix VS release project settings

See merge request !2340

Fix 3D floor sides not rendering properly if a light list was involved

Closes #1207 and #1204

See merge request !2373

Bring back WRITETHINGS, with custom filename and UDMF support!

See merge request !2339