[3.75.15]

New/improved:
Smart: AI: Guess Fingers support for 4 fingers
Smart: When fingers are disabled, the hand bone tail is now snapped to the hand_tip marker position
Smart: New Elbow marker to improve accuracy of the elbow recognition
Smart: AI: Elbow marker implemented in the AI models
Smart: UI: A large hand icon is displayed, showing how many fingers should be recognized
Rig: New Muzzle controller (Limb Options), to offset the whole mouth plus nose optionally
Rig: New "Set Custom Shape" function, to add a custom shape to a bone using the existing shape library (shapes located in Auto-Ruig Pro's lib + current file). The custom shape scale can be set here too.
Rig: Init Scale: Do not require actions scaling if the rig is fresh new
Skin: The feature that auto-updates arms and legs twist weights when changing Secondary Controllers, now supports the switch from/to Bendy-Bones secondaries. Multiple twist vertex groups are generated or merged together on the fly. Uses same functions as the Smooth Twist Weights feature.
Export: Unity: Convert Armature Axes is now enabled automatically when switching to Unity engine, to zero out the skeleton rotation
Export: Add Dummy Mesh is enabled by default for Unity, otherwise Unity won't import the root node when the file contains only animations

Fixed:
Smart: AI: Support for ACES color profile
Rig: Apply Pose as Rest Pose: Error when Kilt limbs had more than one subdivision, while reference bones were not subdivided
Rig: jawbone_track bone not parented to c_skull_01
Rig: Tagged feather bones with a custom prop, was missing for Dupli Limb
Version: Compatibility issue when assigning actions on old files, missing slots
Remap: Ensure fingers are switched to FK, since IK is not supported
Export: Children objects that were hidden were still exported, while the root hidden object is not