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.

Fixed, DECORATE parser: error status was not cleared when switching to different resource.
Fixed, DECORATE parser: fixed a parse error when DB2-specific actor properties (like "//$category") were located outside of actor's scope.

Fixed incorrect non-UDMF <-> UDMF skills translations in Strife_misc.cfg.

Renamed "Save Screenshot (editing area only)" action to "Save Screenshot (active window)". It will now save a screenshot of currently active window, or editing area if no windows are open.
Added icons for "Save Screenshot" menu items.
Development: "Save Screenshot (active window)" action will work on a child Form only if it is inherited from DelayedForm.

Updated MissingThing icon.
More changes in ZDoom_linedefs.cfg and Hexen_linedefs.cfg.

General interface: dynamic lights rendering mode and model rendering mode are now selected via drop-downs.
Renamed "Toggle dynamic lights rendering" action to "Show dynamic lights".
Changed: "Show dynamic lights" action now toggles between available dynamic light rendering modes.
Renamed "Toggle models rendering" action to "Show models".
Changed: "Show models" action now toggles between available model rendering modes.
Removed "Toggle dynamic lights animation" and "Render selected/all models" actions.
Fixed, Randomize Sectors form: selection highlight was not updated after applying the changes when the form was shown in Sectors mode.
Consistency: selection is now cleared after applying changes done in Randomize Things and Randomize Vertices forms.
Fixed, Classic modes: sprites of things with attached models were not rendered when model rendering was disabled.
Updated documentation.

Changed FormBorderStyle from FixedToolWindow to FixedDialog. GZDB should no longer disappear from the alt-tab list when a child form is opened.

Visual mode: "Lower/Raise Floor/Ceiling" actions now work on surfaces with sector slopes.
Cosmetic: numeric textboxes, which support relative values, now have differently colored text and a tooltip.
Internal: renamed Sector.CeilingSlopeOffset to Sector.CeilSlopeOffset, Sector.CeilingSlope to Sector.CeilSlope to match their names with similar sector properties.

Optimization, PK3: approximately 2x performance increase during background resource loading (~7 seconds vs ~16 seconds in r2083, tested on Enjay's Genetech MAP01).
Fixed, PK7: fixed a potential crash when using several PK7 resources with overlapping files.

Internal: added General.Interface.ActiveDockerTabName property.

Changed, Directory/PK3/PK7: on second thought, we don't need to load textures/flats from all possible locations (does anyone really needs to see sprites and graphics in the texture browser?), so this logic now only works when looking for patches.
Game Configurations: added "Custom Ambient Sound (no gravity)":14067, added a couple of missing parameters to other sound-related things.