• The port is now more forgiving when a flat lump cannot be found and renders the sky texture instead.
• Mouse acceleration has been entirely disabled.
• The rendering of flats has been improved (visplanes with the same flats now match up far better than before and the distortion of flats towards the right of the screen has been fixed).
• Some nasty rendering and automap glitches have been fixed which became apparent especially in extremely huge levels (including the "long wall wobble").
• Demo compatiblity with Boom 2.02 has been improved (including the 3-key door bug fix).
• Maps without level name graphics do not crash during the intermission screen anymore.
• Vast overhaul of the CMake build system (@alexmax).
• Screenshots are now saved in PNG format using the SDL2_Image library.