- Fix: Fix error when using the Custom Properties settings with Color properties.

- Fix (#307): The UI button now also checks the presence of old Simplify settings, and adds the new recently introduced rewritten panel if it was already enabled in previous versions.

- Fix: The Simplify tool was not working correctly with several armature in the scene.
- Fix: The Simplify tool might fail in some cases.

- Feature: Added the MHX panel for Diffeomorphic based models, if enabled in the Armature settings. This eliminates the necessity for the model users to install the MHX panel.
- Feature: Hair Extras can be added to the Hair panel. They work similarly to the Outfit Extras.
- Feature: Curves hair are visible in the hair list when added to the main Hair Collection.
- Feature: Added a button to enable/disable only the Smooth Corrective modifiers for Physics Items.
- Feature: Added a button to delete a Physics Item (delete the Object and all associated modifiers in the scene). Previously the physics item could only be removed from the UI.
- Feature: Reimplemented the Lips Shrinkwrap tool.
- Feature: Simplify is now modular, and Outfits and Hair can be quickly disabled with buttons near their respective tabs.
- Feature: Presets for Physics Items.
- Feature (#249): Physics can be rebound on single Outfits or single Physics Items. Advanced option should be on.
- UI: The User Interface has been updated with more modern Blender layout. This should increase usability but also make the menus more responsive (e.g. when collapsing some lists like the Outfit Extras). Please let me know if you have any feedback.
- Enhancement: Better error reporting is implemented for custom properties to debug errors with paths. See https://github.com/Mustard2/MustardUI/wiki/Troubleshooting#custom-properties-error.
- Enhancement: Hair Physics Items status can be changed also directly in the Hair panel.
- Fix (#285, #298): Clean tool deletes Outfit custom properties even if the option is off. An option has been added to control if the custom properties should be removed or not (thanks to @cl3m3c7).
- Fix (#311): Dangling modifiers might remain on the scene when cleaning Physics Items with the Clean Model tool.
- Fix: Hair Switcher Collection does not work if more than one object is in the collection.
- Fix: Armatures are not considered when using the Hair Switcher Collection.
- Fix: Simplify is not disabling the Particle Hair global settings.
- Fix: Simplify might fail if the Hair Collection is not assigned in Configuration mode.
- Fix: Enabling/disabling Physics was not preserving the Physics Items visibility status.
- Fix: Rebinding Physics Items was not rebinding collision cages.
- Fix: Tons of other small bugs fixed.
- Naming Convention: The Hair now use the same MustardUI naming convention as the Outfits to avoid confusion.  The Update UI button takes care of updating the names so older models does not break.
- Deprecation: Deprecated the Auto Smooth buttons, as they were broken and useless in recent Blender versions.
- Deprecation: Curves support as an additional panel has been dropped. Now the Curves items can be added either as main Hair (in the Hair Collection) or Hair Extras (if in the Hair Extras Collection). The Update UI button takes care of updating the behavior for models already using this option.
- Deprecation: Removed the (experimental) pie menu, as it was causing issues in the addon installation and launch for some people. Possibly this will be revisited in the future, if there is interest.