Reverted "Delete Item" action to the way it worked in DB2.
Added "Dissolve Item" action, which works the way "Delete Item" worked in previous revisions of GZDB.
Added "Auto Clear Sidedef Textures" action, "Edit" menu and toolbar button, which toggle automatic removal of sidedef textures when floor or ceiling height is changed or when geometry is drawn, copied or pasted.
Draw Settings panel: upper/lower texture overrides can now be used.
Draw Settings panel: added 2 sets of buttons, which allow to quickly set or clear textures in current selection.
Things are now rendered behind AND on top of the grid/linedefs/vertices when they are dragged.
Redesigned hints system. They are now shown in a side panel.
Edit area auto-focusing is now disabled when script editor is open.
Texture Browser form: no texture group was selected when opening the form in some cases.
Fixed several strange/misleading text messages.
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.
Added "Test Map from current position" action (default shortcut is Ctrl-F9), which lets you play the game from cursor position, if you are in 2D-Mode, and from camera location if you are in Visual Mode.
Added "Sync camera position between 2D and 3D modes" (found in Preferences -> Interface -> Options), which automatically centers 2D-mode on camera position when you leave Visual Mode, and places camera at cursor position when you toggle from 2D-mode to Visual Mode (unless you have Visual Mode camera thing in your map).
Several improvements in Draw Rectangle and Draw Ellipse modes: added info label with current bevel amount and subdivision level; bevel amount now applied properly when shape size is smaller than it.
- Added HighlightedObject property to the EditMode class, the object returned depends on the editing mode and the current highlight
- Exposed several properties in the ClassicMode class
