Fixed code that generated the following warnings under Clang:
-Wdeprecated-non-prototype
-Wsingle-bit-bitfield-constant-conversion warnings

Fix segfault when trying to spawn an MT_PLAYER from Lua

See merge request STJr/SRB2!2276

Fix shieldscale 0 bugs

See merge request STJr/SRB2!2425

Avoid updating IPv4 MS entry if it failed to register

See merge request STJr/SRB2!2462

Fix object collision with solid noskew midtextures (resolves #523)

Closes #523

See merge request STJr/SRB2!2447

Transform FlingRing when attracted instead of spawning new Ring

Closes #1218

See merge request STJr/SRB2!2390

Fix exitgame-ing a demo crashing the game (resolves #1237)

Closes #1237

See merge request STJr/SRB2!2419

Add tofixed lua function

See merge request STJr/SRB2!2430

Fix crash when spawning a BOT_2PAI on a dedicated server

See merge request STJr/SRB2!2409

Fix tiny spindash math moment

See merge request STJr/SRB2!2421

Fix segfault when passing a long string to v.drawString

See merge request STJr/SRB2!2403

Fix automatic mode z-target bugs and crashes (resolves #751, #758, #1264)

Closes #1264, #758, and #751

See merge request STJr/SRB2!2422

Update skin cvar from character select and compare against cvar when warping without a loaded file (resolves #1267, #1117, #1114, #1112)

Closes #1112, #1114, #1117, and #1267

See merge request STJr/SRB2!2467

Add a console variable that will allow individual demos to desync....

See merge request STJr/SRB2!2361

Fix mouse buttons not working in menus with alwaysgrabmouse on

Closes #1257

See merge request STJr/SRB2!2449

Clean up the backtrace code and make it use write() more safely.

See merge request STJr/SRB2!1897

Removed thokked when hitting springs (resolves #1245)

Closes #1245

See merge request STJr/SRB2!2429

Allow less than 3 emerald shards instead of crashing

See merge request STJr/SRB2!2433

Fix vertical aim being off when using lack of perspective

See merge request STJr/SRB2!2408

Don't change drawangle while riding on a fan

Closes #1062

See merge request STJr/SRB2!2371

Rollout rock handling with gravity boots

See merge request STJr/SRB2!2343

Fix forcecharacter regressions & crash (resolves #1262)

Closes #1262

See merge request STJr/SRB2!2464

Fix equation slopes breaking with slopes farther than 32k FU away from the map center

See merge request STJr/SRB2!2397

Expose BASEVIDWIDTH and BASEVIDHEIGHT to Lua and SOC

See merge request STJr/SRB2!2468

Improve slope physics on solid middle textures

See merge request STJr/SRB2!2455

Use correct slope for solid middle textures

Closes #1093

See merge request STJr/SRB2!2454

Merge branch '712-trying-to-load-a-folder-as-an-addon-causes-a-bad-cycle-error-everytime' into 'next'

Resolve "[2.2.10 prerelease] Trying to load a folder as an addon causes a "bad cycle" error every time"

Closes #712

See merge request STJr/SRB2!2412

SPR2defaults fix

See merge request STJr/SRB2!2461

Fix spriteinfo indexing

Closes #1255

See merge request STJr/SRB2!2463

Fix #1248

Closes #1248

See merge request STJr/SRB2!2452

Fix 3D floor side texture scaling (resolves #1247)

Closes #1247

See merge request STJr/SRB2!2435

Fix FOFs with transferline flag and many linedefs randomly crashing

See merge request STJr/SRB2!2285

Prevent infinite loop in R_RenderThickSideRange

See merge request STJr/SRB2!2470