Tumble height is not set to 0 between (s)tumble events

use gitlabrunner to make builds

See merge request KartKrew/RingRacers!8

Implement debugitemamount

See merge request KartKrew/RingRacers!4

Always exit TryRunTics loop early if deferring gamestate change

Closes #1185

See merge request KartKrew/Kart!2325

Temporarily remove uses of RHI renderbuffers

Closes RingRacers#1

See merge request KartKrew/Kart!2323

Always cache EMEMAP/SUPMAP in PU_HUDGFX tag

Closes #1240

See merge request KartKrew/Kart!2326

Add snd_mixingbuffersize cvar

See merge request KartKrew/Kart!2329

Turn off water ripples when reducevfx is on

See merge request KartKrew/Kart!2331

Allows the user to configure the mixing buffer size to reduce
latency at the cost of higher CPU usage, or vice versa.

This also raises the default buffer size from 1024 to 2048, to
address some underrun problems people have with the current buffer
size.

A number of people have said they have sensory issues caused by the
ripple effects from water and heat. This turns off those effects
when reducevfx is on.

It may be a better idea for this to be a separate option, but it's
a starting point we can build upon later.

Drift easing idea

See merge request KartKrew/Kart!2330

More similar to RR than SRB2Kart, but you regain control over a few tics.

Calls to F_ContinueCredits and D_StartTitle, even if deferred,
change the current gamestate. However, the tic loop in TryRunTics
may still have a couple tics to execute to catch up to current
time, and as a consequence G_Ticker may execute game logic while
the current state is not GS_LEVEL or equivalent. As a result, it is
highly likely for the game to crash.

This adds deferred credits start to the tic loop, and exits that
loop if either title or credits are supposed to start after the
current iteration, fixing this crash scenario.

Fixes KartKrew/Kart#1185

Grow/invinc tweakpass

Closes #1333

See merge request KartKrew/Kart!2321

Add streamer safe music mode

Closes #1334

See merge request KartKrew/Kart!2327

Challenge Kindnesses

See merge request KartKrew/Kart!2328

2.2 bot nerfs

See merge request KartKrew/Kart!2315

Sets a cap to the value loaded from gamedata, too

expose tilt

See merge request KartKrew/RingRacers!6

Don't play music that is marked contentidunsafe in its MUSICDEF (if
it exists).

Defuses the 12-long chain scenario in a relatively fair way

This allows marking music in MUSICDEF as unsafe for Content ID and
other similar content surveillance mechanisms.

Allow manual replay save in develop builds

See merge request KartKrew/Kart!2319

These particular patches need to be cached in
K_LoadKartHUDGraphics, but caching them anywhere else with a
different tag causes them to potentially be freed and then later
use-after-freed during a Sealed Star run, causing a crash. Instead,
let's cache them as PU_HUDGFX in all cases where they are used.

Fixes KartKrew/Kart#1240

Save corruption fixes

See merge request KartKrew/Kart!2314

Fix pack alignment handling in screen capture

Closes #41

See merge request KartKrew/Kart!2322

OpenGL does not have renderbuffers until OpenGL 3.0 (contrast to
GLES which has them starting with 2.0). In order to allow people
with older GPUs to play the game for now (until ANGLE+GLES), I am
removing the use of renderbuffers in the game code. They aren't
needed because nothing actually needs a depth or stencil test yet.
Once HWR2 gets rolling, I'll add these back.

Fixes KartKrew/RingRacers#1

Some incorrect arithmetic (applying padding to each pixel instead
of each _row_ of pixels) caused the pixel data to be interpreted
incorrectly. This was both in the GL2 RHI driver for read_pixels
and in the ScreenCapture module.

Fixes #41

Mitigates against multiple instances trying to write to the same
tmp file at the same time.