Fixed, Texture Browser form: we should not save "Long texture names" value when Map.Config.UseLongTextureNames is disabled.
Fixed, Linedef Edit form (UDMF): fixed a crash on opening the form when "linedefrenderstyles" block was missing from game configuration.

Texture Browser Control: "Long texture names" and "Show image size" values are now stored in program configuration.

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.

Texture browser form: added "Long texture names" check-box. It can be used to toggle between displaying long and short texture names.
Texture browser form: added "Show image size" check-box.
Texture browser form: image size is now shown differently.
Image Selector: added a button to toggle between long and short texture name.
Linedef info panel: long texture names are now displayed properly.
Sector info panel: long texture names are now displayed properly.
Fixed: "Save Screenshot" and "Save Edit Area Screenshot" actions were triggered multiple times when a child window was open.
Fixed: used textures should be always updated after using "Change map in current WAD" action.
Fixed, "Change map in current WAD": fixed a crash when trying to switch from a map with missing game configuration path.
Updated ZDoom_ACS.cfg.

Added long texture names support (enabled when "longtexturenames" game configuration property is set to true and "Use long texture names" check box is checked in Map Options).
Open Map in Current WAD: resources are now reloaded when current and target map's resources don't match.
Added some boilerplate to UniversalParser and PK3FileImage.
Internal: ImageSelectorControl now has "UsePreviews" property.
Internal: added ConfigurablePictureBox.
Updated ZDoom_DECORATE.cfg.

Game configurations: fixed "Door Generic (202)" movement speed, type and delay, fixed "Door Close Wait Open (249)" movement speed and delay.

Linedef Edit Form, UDMF: "Lock number" now has a drop-down with supported key types (no LOCKDEFS support (yet?)). You can still type lock number manually.

Internal: removed some unrelated stuff from NodesViewer.csproj.

Thing Edit form: when selection contains more than one thing, thing types form selected category are now randomly applied to it.  
Fixed, Thing Edit form: selection change was not processed in some cases.

Changed: thing sprite is now displayed in ThingBrowserControl.

Updated documentation.

"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.

Fixed, Draw Grid mode: fixed a crash on accepting the mode when start and end points had the same coordinates.
Fixed, Draw Grid mode: grid triangles are now aligned properly with previously drawn triangulated grids when using the same map grid size and "Lock slices to grid" and "Triangulate" options are enabled.
Fixed, Draw Grid mode: not all grid cells were drawn in some cases.
Fixed, Draw Grid mode: current grid size was not increased when "Lock slices to grid" was enabled and the start point was no longer on the map grid.
Changed, Draw Grid mode: snap to grid is now always enabled and snap to nearest is now always disabled when "Lock slices to grid" is enabled.
Changed, Draw Grid mode: when grid's width or height is 0 when accepting the mode, a segmented line is now drawn instead of just a line.

Fixed, Open Map form: a warning is now displayed when no map is selected when accepting the form.

Fixed, Thing edit form: implemented overcomplicated required flags check (which should work as expected this time. probably.).

Fixed, Change Map form: keyboard focus was not properly updated after selecting current map in the maps list.

Fixed: when switching to a different map format, all nodes with "nodebuild" property set to true in the "maplumpnames" block of current game configuration are now removed.

A warning is now displayed when an unclosed marker range is found in a WAD (e.g. when there's a S_START, but no S_END after it).

Fixed incorrect screenshot size when a window was maximized.
Fixed: more than one screenshot per second can now be saved.
Changed screenshot filename date format to yyyy.mm.dd.

Fixed: in some cases incorrect window bounds were used when saving active window screenshot when several child windows were open.

Fixed: in some cases selection synchronization logic worked incorrectly when switching from Visual to Classic mode.

Randomize Sectors form: floor/ceiling height controls now have "Offset mode" drop-downs. Available modes are "Raise and lower" (default), "Raise only" and "Lower only".
Consistency, Randomize Sectors form: persistent settings are now saved only when applying changes done in the form (e.g. in the same conditions as in Randomize Things / Vertices forms). 

Fixed: Randomize Sectors, UDMF: vertex height changes were not undone properly after using the mode (I broke it in r2101).
Fixed: Randomize Sectors: floor/ceiling textures can not be used as lower/upper textures when "MixTexturesAndFlats" is disabled. In this case the corresponding option is now changed to "Use default texture".

Fixed, Thing Edit form: double-click on a thing type in the Things list was handled incorrectly in some cases.
Changed, Thing Edit form: multi-select mode is now disabled when only one thing is edited.
Internal: different implementation of MultiSelectTreeview (http://sourceforge.net/projects/mstreeview/) is now used.

Randomize Sectors form: added "Use vertex heights" check-boxes. When enabled and used on triangular sectors, it can be used to create a terrain-like look.
Updated ZDoom_DECORATE.cfg.
Updated documentation, rearranged contents a bit.

Linedef Edit form: resized controls to show all flags without scrolling.
Updated ACS and DECOTARE ZDoom configurations.

Fixed, WavefrontExporter: floor and ceiling textures were not exported when using "classic" game configurations (ones with disabled "MixTexturesAndFlats" option). This should also fix incorrect flats on exported model when there are flats and textures with the same name.
Fixed, WavefrontExporter: 3d floors geometry and wall geometry around them was created incorrectly.
Fixed, WavefrontExporter: floor and ceiling textures of non-Vavoom 3d floors were swapped on exported geometry.