ENHANCEMENTS

Most lists now support dragging and dropping to add new elements (including archetypes, tile sets, props, and doorway connectors/blockers)
All lists now support undo/redo when adding or deleting elements
Prop processing is now significantly faster on complex dungeons with many GameObjects
Empty GameObject entries in the LocalPropSet or RandomPrefab components will no longer be ignored and can now be used to signal that no prop should be spawned
Added a validation rule that warns when a terrain is being used in a tile that allows rotation (Unity terrains cannot be rotated)
Selected doorways are now checked for valid placement in the editor:

The doorway will be colour-coded (green = valid, orange = not placed on the edge of the tile, red = not axis-aligned)
A red line will be drawn from the doorway to the nearest valid location
For doorways that are incorrectly placed, there will be a button in the inspector to attempt to fix the placement issues

The dungeon validator will now warn when a doorway is not placed on the edge of the tile bounding box
Unity NavMesh Adapter improvements

Added a new option to automatically calculate the start and end points of navigation links per-doorway instead of just using a pre-determined distance on either side of the doorway
When using the "Full Dungeon Bake" mode, any existing navmesh surfaces in the dungeons will now be disabled to avoid overlapping navigation meshes

TileConnectionRule supports a new 'ConnectionDelegate' which contains more information for more complex custom connection rules. The old delegate has been marked as obsolete but will continue to function for now
Tags are now available on tile and doorway proxy objects for easier access when writing custom connection rules in code

BUG FIXES

Fixed an issue where too much time was being attributed to the branch generation step. New steps for branch pruning and instantiating tile prefabs have been added for more accurate analysis
Fixed and issue causing the 'Cull Each Child' option to not work properly with newer versions of SECTR (requires re-exporting SECTR_VIS integration package)
Fixed a NullReferenceException when using an empty entry in the RandomPrefab component
Fixed an issue causing the dungeon validator to incorrectly warn about doorways facing the wrong way in a tile containing a terrain
Fixed an issue causing keys to sometimes not be able to spawn in the same room as the lock
Key spawn points will now correctly only be used once
Fixed an issue causing a doorway's 'LockID' to not be assigned
Fixed a NullReferenceException caused when no valid locks could be found
Fixed a NullReferenceException when trying to copy tags from a tile that has none assigned
Fixed a bug causing DunGen to generate too few branches when the branch mode is set to 'Global'

DunGen