Add LICENSE-3RD-PARTY.txt

See merge request KartKrew/Kart!1110

Stereo Mode

See merge request KartKrew/Kart!1097

Don't render item capsule numbers mirrored in Encore mode

Closes #493

See merge request KartKrew/Kart!1119

Add musicdef console command

See merge request KartKrew/Kart!1114

Draws a dot matrix over the background level icon

- Shown on the menu
- soundtest.autosequence
    - Plays all songs in sequence, skipping over the soundtest entry.
        - Plays each looping song twice (and fades out if it's the last one in the musicdef's tracks)
        - Plays non-looping songs once with no fade ever
   - Disabled when S_SoundTestStop called
- Songs that end outside of autosequence will now stop the visible Playing.

Preface with a `\` (ie `Lump VOTEEA,\VOTEEB`) to indicate the preference is not to loop.
This is for special jingles that have definitive conclusions.

- Use LSTitleHighString at the top of the menu for the music's title/Sound Test
- Only show Track for relevant entries
- Show cv_soundtest.value in hex for that Classic Sonic soundtest flavour

- Make it full base resolution...
- ...but use ClipRect to make it fit inside the window of the Stereo

Reload palette even if rewinding a replay or reloading the gamestate (Resolves #443)

Closes #443

See merge request KartKrew/Kart!1118

Do not change skybox for players after they finish the race

See merge request KartKrew/Kart!1115

Improve devmode visibility and usability

See merge request KartKrew/Kart!1113

Force Trip Wires to render at maximum brightness

Closes #318

See merge request KartKrew/Kart!1112

Access to soundvolume and musicvolume through the Stereo Mode menu
- Draws a knob and volume bar (with loudness warning)
- Changes which cvar is associated with it depending on selected song/lack of
    - If on any regular song, use digital music volume
    - If on soundtest, use sound volume
        - unless on entry 0 aka N/A, where no volume is visible at all

No more magic numbers for M_DrawSoundTest

Add -nolua command line parameter

See merge request KartKrew/Kart!1117

Disables loading Lua scripts entirely.

- Buttons have been implemented.
    - They push down when you press an input.
        - FUTURE WORK: Back doesn't get the opportunity to do so. Delay the exit of this menu?
    - Certain ones have special properties.
        - PLAY locks down when playing and not paused
        - PAUSE locks down when playing and paused
        - TRACK is a wheel/slidery thing
        - BACK should get pressed when you're exiting (see previous FUTURE WORK)
        - FUTURE WORK: The detection of these currently uses magic numbers.
- The Stereo itself is now drawn.
    - FUTURE WORK: The screen's contents are still the testing visuals.

Per VC discussion:
- Pressing STOP does not NULL your selected song
    - ...unless you press it a second time while already stopped
- Pressing PLAY should de-activate pause if active, not restart the track
- Pressing PAUSE while paused should not de-activate pause
- Removed the Extra functionality from TRACK.

Instead of a fake S_StopMusic-based Pause, make it use the S_PauseAudio/S_ResumeAudio system.

Per review, combine all spots where s_sound.c attempts to restore music into one gamestate-specific switch case system.

Calling P_SetTarget on the temporary skybox_t is
pointless. P_SwitchSkybox calls P_SetTarget when copying
to the player struct.

musicdef -volume <volume> changes the volume of the
currently playing song. The change persists through song
changes and is visible with devmode music.

musicdef -show prints all changed musicdef volumes.

The intention of this command is to allow editing music
volumes quickly in game, without having to quit, edit
music.pk3, and reopen the game.

Draws over ping and FPS counters.

Old behavior was just use the last splitscreen.

This does not the position devmode draws on the screen.

Fixes sector light level and colormaps darkening Trip
Wires, especially in OpenGL.

Add "UFO" script type

See merge request KartKrew/Kart!1111

Fix random Encore vote, error if ENCORE/TWEAKMAP lump is invalid, add debugencorevote command

Closes #333

See merge request KartKrew/Kart!1101

Player IDs and persistence

See merge request KartKrew/Kart!1062