Fixed a bug where the DECORATE parser got confused by wrong tokens after starting the states definition. Fixes #374.

Fixed multi select in 3D Floor Mode to work when starting to drag inside a sector

Fixed a crash in Edit Selection Mode when visual sloping was previously used to make the slope of a sector perfectly planar

Moved smart grid transform into Linedefs Mode and Vertices Mode, so it also works when simply highlighting a linedef or vertex. When doing smart grid transform on a linedef it'll also use the vertex closest to the mouse cursor as the origin instead of always the start vertex

Added "Smart Grid Transform" action that sets grid transformation based on the selected elements. Vertex selected: set grid origin to that vertex. Linedef selected: align grid to that linedef. Nothing selected: reset grid transformation to the default coordinate system. No default key bound.

3D Floor Mode: using tab in the 3D floor editor window now cycles through the input fields in a sane order

Fixed a crash that would happen when the line slope things (9500/9501) are used but the linedef they are tagged to doesn't have a front sidedef. Fixes #398.

Added option to select behavior (Tools -> Preferences -> Editing) of scaling when auto-aligning textures on floors/ceilings (use base scale of 1 (default), use current scale as base, never scale)

Custom types for user defined UDMF fields could cause problems when fields with the same name used different types, so they are disabled for the time being (only bool, int, float and string are allowed now)

Update things before adding their geometry in visual mode so things don't go awry when realtime editing them. Fixes #393.

Aligning textures on the X axis now works correctly with negative scale values when world panning is not enabled.

There can be multiple different ambient sounds with the same sound name, so add the index to the name to differentiate them. Fixes #390.

Fixes for raisesectortonearest and lowersectortonearest action when used on slope handles to account for float rounding errors

Copy resource bitmaps before using them on a worker thread

Print a warning and skip parsing classes that try to inherit from themselves (instead of going into an infinite loop)

The sloping between handles action is now a bit more convenient and tries to figure out what the user wants to do even if not exactly two slope handles are selected.

- Smart pivot handles are now shown for the highlighted slope handle

- Added action to slope selected floors/ceilings between selected slope handles (default key: Ctrl-F)
- Added Shift-W as default key to toggle visual slope picking

- If geometry is selected and the geometry the modified slope handle belongs to is not selected it will now also be modified
- Made the slope handles hover closer to the geometry