dsda-doom v0.27   This update brings UDMF support out of beta with an official dsda UDMF namespace, adds MAPINFO support, and fixes a ton of bugs. Other highlights include a smooth light fade option for opengl (from bkoropoff), improvements to the build mode, and ambient sound support. Ambient sound works retroactively: check out Containment Area, which now has beeping computers and audible conveyor belts. MAPINFO does not work retroactively, as the implementation is more strict and le