Fixed incorrect formatting of changelog messages displayed in the updater window.
Changed, Classic modes: models for things hidden by thing filter are now rendered with much lower alpha than the "regular" ones.
Changed, Sound Environments mode: previously selected sound environment is now automatically selected when inserting a new sound environment item. Also it's now impossible to accept the form without selecting a sound environment.
Changed, Sound Propagation mode: single-sided lines with sound zone boundary flag are now highlightable and clickable.
Changed, Linedef Edit window, Visual mode, UDMF: when "Edit windows remember selected tabs" setting is enabled and Front or Back tab was previously selected, the tab, which corresponds to the highlighted side will be selected.
Added: thing categories defined in Game Configurations can now be nested.
Changed, Thing Edit window: thing categories now use different icons.
Fixed: Thing Edit and Vertex edit windows had incorrect help links.
Fixed: Sound Propagation and Sound Environment modes had incorrect help links.
Documentation: updated "DECORATE keys" and "Things Settings" pages.
Visual mode, 3d floors: sloped 3d floors are now always rendered as opaque (just like in GZDoom).
Fixed a crash when creating a new unknown thing (introduced in r2324).
Documentation: updated "Action Argument Settings" and "DECORATE keys" pages.
Game Configurations: updated things in ZDoom "Bridges" category to use argument types 23 and 24.
Documentation: added "Action Argument Settings" page, updated "Basic Settings", "Map Format Settings", "Linedefs Settings" and "Things Settings" pages in Configurations -> Game Configurations group.
Documentation: updated "DECORATE keys" page.
Removed "Sectors Brightness Mode" action, because the mode itself was removed long ago...
Documentation: updated "DECORATE keys", "Things Settings" and "Linedefs Settings" pages.
Fixed, .obj Terrain Importer mode: the mode was unable to parse .obj vertex/face definitions generated by some (Cinema4D) modeling programs.
Changed, .obj Terrain Importer mode: vertical (e.g. perpendicular to up axis) polygons are now skipped during model importing.
Changed, Ceiling Align mode, Floor Align mode: changed rotation steps form 45 to 15 deg.
Game configurations, Strife, Doom map format: several thing flags were named incorrectly.
Game configurations, Strife, Doom map format: several linedef flags were listed as "Unknown".
Edit Selection mode: 15-degree rotation steps require more precision...
Changed, Things, Sectors, Linedefs, Vertices modes: we shouldn't select highlighted map element during the copy action when no map elements are selected.
Internal: removed some debug stuff from CheckTextureAlignment and ResultTexturesMisaligned.
Changed, Thing Info panel: floor slopes are now taken into account when showing thing's Z position (same plane type limitations as above).
Changed, Thing Info panel: thing position is now shown as "X, Y, Z (abs. Z)".
MAPINFO: added "DoomEdNum" and "SpawnNums" blocks support.
MAPINFO: added "#include" directive support.
MAPINFO: added "$gzdb_skip" special comment support.
DECORATE: "spawnthing" Game Configuration block is now updated using "SpawnID" actor property.
Game configurations: added "class" property to the most of ZDoom things.
Actions: removed "Reload MAPINFO" action.
Documentation: merged "GLDEFS and MODELDEF support", "(Z)MAPINFO support" and "TEXTURES support" topics into "(G)ZDoom text lumps support", added info about the other text lumps GZDB can use.
Find and Replace Mode: renamed "Linedef Actions" search mode to "Linedef Action and Arguments".
Find and Replace Mode: renamed "Thing Action" search mode to "Thing Action and Arguments".
Cosmetic layout changes in Find and Replace window.
Updated documentation.
Changes in "Linedef Action and Arguments" and "Thing Action and Arguments" search modes:
Changed arguments search syntax from "action;arg0,arg1,arg2,arg3,arg4" to "action arg0 arg1 arg2 arg3 arg4"
You can now find ACS script actions with named scripts using "action arg0str ..." syntax.
You can now replace arguments using the same syntax as in the "Find what" field.
Visual mode: added support for "Transfer Floor Brightness" (210) effect.
Visual mode: added support for "Transfer Ceiling Brightness" (211) effect.
Visual mode: changed the way thing brightness is calculated. Should be closer to GZDoom now.
Sector Edit Form: you can now enter "++" or "--" into "Height Offset" input to raise or lower sectors by their height.
Cosmetic fix in ZDoom_linedefs.cfg.
Added, Visual mode, UDMF: added "Increase Scale" and "Decrease Scale" actions.
Added, Visual mode, UDMF: "Reset Texture Offsets" action now resets scale when used on things.
Added, Visual mode, UDMF: "Reset Local Texture Offsets" action now resets scale, pitch and roll when used on things.
Changed, Visual mode, UDMF: "Reset Texture Offsets" action now only resets texture offsets (previously it also reset texture scale).
Changed, Visual mode, UDMF: "Reset Local Texture Offsets" action now resets texture offsets, scale and brightness of sidedefs and also rotation of floors/ceilings.
Changed, Visual mode, UDMF: thing box arrow now displays pitch and roll for things, which have attached model and appropriate MODELDEF flags.
Changed, Thing Edit Form, UDMF: negative pitch and roll can now be entered.
Updated documentation.
Changed, cosmetic, Sector Info panel, Visual mode: info about currently highlighted surface is now shown using different color.
Changed, cosmetic, Linedef Info panel, Visual mode, non-UDMF: texture offset labels for currently highlighted sidedef are now shown using different color.
Changed, cosmetic, Vertex Info panel, UDMF: floor and ceiling offset labels are now grayed out when they have default values.
Added, Game configurations: added "thingclasshelp" property. It's used to open a website when thing class name is clicked in the Thing Edit form.
Changed, "Raise/Lower sector to nearest" action: 3d floors are now taken into account when using the action on things.
Updated documentation.
Fixed, Texture Browser: restored Tab key functionality yet again (I broke this in r2248...).
Added a bit of boilerplate to some of Tag Explorer's settings.
Internal: added CollapsibleSplitter control.
Changed, Tag Explorer: several wildcards can now be used at once. For example, entering "#12 $9" will show only map elements with tag 12 and action 9.
Changed, Tag Explorer: you can now filter list by polyobject number by entering "^NN" in the Filter field.
Changed, cosmetic: reduced map resizing caused by UI resizing during map loading.
Internal: MapSet.ConvertSelection no longer selects sectors with no sidedefs when converting selection to sectors (unless those sectors were already selected).
Event lines: added event lines for polyobject anchor -> polyobject start spot pairs.
Fixed, Things mode: event lines were not drawn after finishing panning.
