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.
Changed, Things mode: things are now rendered with a bit of transparency, so things beneath other things are now visible.
Fixed, Things mode: in some cases it was impossible to highlight a thing beneath other thing when their positions were the same.
Changed, 2D modes: changed thing bounding box and arrow image.
Fixed, cosmetic, 2D modes: in some cases thing arrows were rendered bigger than thing bounding boxes.
"Find Any Texture or Flat", "Find Sector Flat" and "Find Sidedef Texture" options now support "*" (match any number of characters) and "?" (match any single character) wildcards.
"Find Any Texture or Flat" is now available any game configuration (previously it was disabled when "MixTexturesFlats" game configuration option was disabled, now only "Replace" functionality is disabled).
"Find Thing Flags" and "Find Linedef Flags" can now replace flags.
Added "Find Sidedef Flags" and "Find Sector Flags" search options.
