Linedef Color Presets: Linedef Color Presets can now be disabled.
Things Filters window: a warning icon is now displayed near the filter name in the filters list when the filter has no usable settings.
Change Map in Current WAD window: keyboard focus was not set to initially selected item.
Changed the default wad filename from "unnamed.wad" to "[map name].wad".
Updated documentation ("Custom linedef colors" page).
Fixed, Texture Browser Form: well, I broke "Tab" key functionality again (in previous commit)...
Maintenance: changed curly braces style to match DB2 one (hopefully not breaking anything in the process...).
Maintenance: changed private method names casing to match DB2 one.