Master Server 2

See merge request KartKrew/Kart-Public!224

Battle item balance

See merge request !222

Apply volume to sounds that have an origin

See merge request !223

Don't let players change their name more than five times per minute

See merge request !221

Save renderer to file

See merge request !220

Removes rooms, replaced with cv_advertise and "Advertise" on the host menu.

According to the new API, SRB2APPLICATION is sent instead of MODID. A contact
field was added, but there is no means of accessing it or setting it.

As a slight change, the server list will be populated even on an outdated
version of the game. (The new API was designed with this in mind.) The update
alert is still presented first of course.

Previously sounds with an origin would always start at max volume. This is
because the distance calculation adjusts the volume, and that volume needs to
be updated every tic as distance changes. Storing the original volume works.

SetCurrentDirectory to where the exe lives

See merge request !219

- Far more inclined to give you Orbinaut, Jawz, Invincibility, and Grow. Far less inclined to give you Bananas or Sneakers.
- Item odds no longer scale with bumper count differences.

Cause more issues than fixes. Still around for Linux.

Flush random map pool after all but 3 are played

See merge request !216

Caret color codes in server name

See merge request !218

Discord Rich Presence

See merge request !207

A and B are v2 terminology