Changed, TEXTURES parser: patch loading errors are now treated as warnings for optional textures.
Changed, TEXTURES parser: patch loading is now skipped for textures with "NullTexture" option.
Fixed, Map Analysis mode: fixed a crash when trying to dissolve an invalid sector when one of it's linedefs referenced it on the both sides.
Fixed, Sectors mode: fixed incorrect undo description when deleting sectors.
Internal: joined declaration and assignment of some more variables.