- Update to version 2.2.9
* Fixed animated skin colors in OpenGL.
* Fixed an error when loading addons with custom savedata via
the command line (notably, when testing from Zone Builder).
* Optimized Lua, plane rendering, and drawing of FOFs.
* Added polyobject support for Lua.
* Added multitag library for Lua, which allows reading and
manipulation of tags on mapthings, lines and sectors; also
added tag iterator functions.
* Attraction Shield’s homing attack may now be chained.
* The addfile command now supports adding multiple files.
* The player will now smoothly slide across a sloped ceiling.
* Let more graphics lumps be replaced clientside.
* Various bits of progress on UDMF.
* Special text is printed when the player begins the final lap
in Circuit mode.
* Ring drain sectors play the ring depletion sound.
* Pausing the game is no longer possible during the score tally
screen in Marathon Mode.
* Tons of map fixes from sphere.
* Added acronym keywords to Co-op levels. For use with the map
command, so e.g. you can warp to Green Flower 1 with map GFZ1.
* The game now resends the whole gamestate when resyncing a
player.