[1.28.25]

New/improved:
Spline IK: Support for Spline IK limbs
Spline IK: New default value for the IK-FK switch (requires latest Auto-Rig Pro version)
Spline IK: UI: Draw the Simple-Advanced and IK-FK selection as a single line
Spline IK: New "Spline Smoothness" value
Head limb: Improved automatic filling of head and head end entries
Spine limb: Add "waist" as root bone name for automatic limb preset evaluation
Arm and Leg limbs: Re-enabled "Update Vertex Groups" limb options automatically when the Quick Rig process ends, avoiding manual trigger of this option

Fixed:
Misc: Missing space in the required version syntax
Spline IK: Fix multiple limbs support
Spline IK: Fix multiple limbs support #2
Use "edit_bones.active" to get the selected bone instead of "selected_edit_bones" which returns None if the edit bone is locked
Maths: Skip angle direction evaluation if vectors are parallel
Leg limb: The automatic knee correction for proper IK vector could fail with short distances, implemented a more robust method
Misc: Typo mistake line 5277
Misc: Clean up the get document path function, unecessary code
Mismatch in limb mirroring dupli sides
Some arms and legs options were not assigned to the correct dupli side
Error when saving skin data while some bones are invalid
Typo error Noneo > None