Expose several movement-related functions to Lua.

See merge request STJr/SRB2!884

Remove references to the Glide API

See merge request STJr/SRB2!1037

Finishing off these changes; how a player moves vertically.

Still more complex than P_RingZMovement.

Ever wanted to move like a ring vertically?

Because P_XYMovement wasn't enough.

Ironically this seems slightly more advanced than P_RingXYMovement...

Ever wanted to move like a ring horizontally?

It was so easy; it took a grand total of one compile to implement!
Why wasn't this done before...

Expose P_RailThinker to Lua.

See merge request STJr/SRB2!1059

Marathon Run fixes (Resolves #184)

Closes #184

See merge request STJr/SRB2!1061

Comment out unused border patch variables.

See merge request STJr/SRB2!1055

Fix crash by handling precip mobjs correctly in ogl sprite sorting

See merge request STJr/SRB2!1062

Fix live event backups being created at run start; there's no meaningful progress in GFZ1 to recover from.

* Apply the RTA penalty to the live event backup rather than the current timer. (Resolves #184)
* Snap the character name and timer mode text to the bottom of the screen, just above the bar.

Fix ASTBlendPixel outputting empty pixels sometimes

See merge request STJr/SRB2!945

MF2_LINKDRAW support for OpenGL

See merge request STJr/SRB2!1031

Use ordered id for netvars instead of shitty hash

See merge request STJr/SRB2!1010

Bubble Shield overhaul

See merge request STJr/SRB2!1046

Merge branch 'i-added-the-branch-name-into-the-version-command-when-outside-of-develop-mode' into 'master'

Adds the branch name into the version command printout when outside of DEVELOP mode.

See merge request STJr/SRB2!981

Detect GCC version in Makefile

See merge request STJr/SRB2!1002

2.2.6 preparation

See merge request STJr/SRB2!1050

Revert "Fix computation of very high pings"

See merge request STJr/SRB2!1053

This reverts commit 82dbe95e.

Fix GL y-shearing ignoring a Y-flipped transform

See merge request STJr/SRB2!1051