BCC script compiler (https://github.com/wormt/bcc/) is now bundled with GZDB.
Main Form, "File" menu: only existing files are now added to the "recent files" list.
Configurations: all 64 game configuration are now available by default.
Game Configurations window: game configurations can now be disabled. This setting is mostly cosmetic. When a game configuration is disabled, it won't be shown in "game configuration" dropdowns in New\Open Map Options and Map Options windows. If a map's .dbs file specifies a disabled configuration, it will be picked as a map configuration anyway.
Linedefs mode: vertex insert preview logic used Highlight range instead of Stitch range (which is used when draw mode engages).
Visual mode: double-sided middle textures were not selected when using "Select" action with "with same texture" modifier.
Textures: some optimizations in patch blending code.
ZDoom ACS script configuration: added definitions for StrLeft, StrMid and StrRight functions.
Sectors mode: event lines were not rendered for things targeting highlighted sector.
Added "DropItem" and "CheckFlag" definitions to ACS and DECORATE script configurations.
Linedef colors were not updated properly when a map format was changed and were causing an exception in some cases.
Vertices mode: linedef in split linedefs range was redreawn incorrectly in some cases.
Updated "Sector 3D Floor" (160) action: set default Type to Solid (1), added "Use Arg5 as Line ID" flag to Types, changed arg5 name to "Line ID / Hi-Tag".
Added "GetUserCVar", "SetCVar" and "SetUserCVar" functions to ACS configuration.
Set width and height of several actors to 0 in game configutrations (non-zero sizes were added as a workaround when GZDB was not displaying actors with 0 width and height in Visual mode).
Added several sprites to game configurations.
Event lines for "event activators" (ActorMover, Camera and things with Thing_SetGoal special) are now drawn with different color.
Fixed a crash when a Thing with arguments is pasted in Visual modes.
Several other small fixes.
Fixed config error in ZDoom_things.cfg.
Fixed config error in ZDoom_ACS.cfg
TEXTURES patches can now be loaded from anywhere inside resource.
Configs: things from "Cameras and Interpolation" and "Boom Items" categories weren't rendered in Visual modes.
Configs: several new icons are now used for things.
Reverted sectors rendering from 1.12b, because it was done in too hackish way and was causing more and more problems. Models rendered height is now 25% lower instead.
Models rendering height can be toggled between normal and 85% in Preferences->Appearance->"Scale models in Visual modes"
Fixed several small bugs here and there.
AngleOffset, PitchOffset and RollOffset MODELDEF properties are now supported.
Fixed a crash when editor tries to display a model for an actor without a valid sprite in Visual mode.
Fixed a possible crash when MODELDEF is reloaded from 2d-mode.
Fixed several things in Doom2_things.cfg.
UDMF Controls plugin:
Fixed several bugs in plugin's sliders logic.
Things can now be cut, copied and pasted in Visual modes.
Sector geometry was not updated properly after Undo/Redo in GZDoom Visual mode.
Fixed an error when user selects multiple things and attempts to view their properties in Doom map format.
Added Decorate and Modeldef syntax hilighting, autocompletion and item recognition to Script editor.
Script Editor can now autodetect several script types when you open them (currently ACS, Decorate and Modeldef scripts are recognized).
Tag Explorer: fixed a bug when Tag Explorer update can block keyboard keys release detection logic.
Replaced all doubles with floats.
Script Editor:
Navigator drop-down now updates automatically.
Navigator drop-down now also works for external files.
Added Navigator drop-down support for Decorate and Modeldef.