- Extract an even more bare version of ControlBoneParentBase that can
  act as a common superclass of no-op parent builders like Org.
- Introduce ControlBoneParentBase.replace_nested for proper polymorphism.
- Introduce BaseSkinNode.control_node to fix armature parent builder.
- Annotate types and fix warnings in all skin and new face rigs.

This should cause no behavior changes. Now rigify/rigs/ is warning free.

- Fix uses of BaseRig.ToplevelBones to work correctly in subclasses.
- Enhance parameter annotations for bone and mechanism mixins.
- Annotate types and fix warnings in limb rigs.

- Pep8 formatting: whitespace style issues, comments, long lines.
- Preserved formatting of a couple of tables through noqa tag.
- Renamed a few local variables for typos, clarity and scope conflicts.
- Commented out a duplicate key in the tweak_copyloc_L table.
- Added assertion in an impossible branch.

This should cause no functionality changes.

glTF exporter: better solution for mesh parented to bone management, when using rest pose as joint node default TRS

Fix exporting skined mesh without armature, when user export selection only, and export skined mesh without selecting the corresponding armature

Introduced in 97bb515d

Added nullcheck to make sure execution is possible.

Differential Revision: https://developer.blender.org/D16534

bpyob was being accessed on line #3568 without being initialized.

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D16455

Following up to D15615, I noticed that many messages are either
properly extracted, but not translated due to the use of printf-style
formatting in strings, or not extracted at all. Using the pgettext
function explicitly before formatting fixes that.

Since the affected messages are already extracted, no additional work
is needed from translators.

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D16373

Introduce a method to annotate types and names of entries in the
`bones` container of rig components and apply it, and other type
annotations, to a number of not very complex rig classes.

- Introduce BaseRigMixin as a typed base class for mixins intended
  for use in rig classes (using BaseRig as a parent causes issues).
- Introduce TypedBoneDict that does not suppress the unknown attribute
  analysis in PyCharm, and use it in a system of subclasses to
  annotate the bones in various rigs. BaseBoneDict is necessary
  because the annotation affects all subclasses, so TypedBoneDict
  cannot inherit from BoneDict with the annotation.
- Add or adjust other type annotations of rig methods and utilities.
- Fix other warnings, e.g. undeclared attributes, excessively long
  lines, whitespace style issues and typos.

Refactor the matrix stack in a way that does not require matrix
inversion. Basically, store the state of the final transform in
the stack.

Technically this makes regression test to fail with Blender Icons,
but the new code gives more correct icons. So the reference image
is to simply be regenerated.

Added the Asset Browser, Spreadsheet  and Geometry Node editors in their respective categories for pie menu add-on.

Differential Revision: https://developer.blender.org/D16323

Unfortunately, messages cannot be properly extracted from f-strings.
Use format() method instead.

Reviewed By: Sybren A. Stüvel, Campbell Barton

Differential Revision: https://developer.blender.org/D15615

Unfortunately, messages cannot be properly extracted from f-strings.
Use format() method instead.

Reviewed By: Sybren A. Stüvel, Campbell Barton

Differential Revision: https://developer.blender.org/D15615

CloudRig has a feature that allows the user to automatically generate
Action constraints that move bones of the rig based on the position
of other bones. This is done by adding and configuring the actions
in a UI panel of the metarig. The feature also supports corrective
actions that activate based on the state of two other actions.

This ports the feature to base Rigify with the necessary changes in
code organization and style, and replacing CloudRig-specific code.

There are also some functional changes:

- The order of action constraints is reversed.
- The way symmetry of LOCATION_X is handed is changed to
  match how Paste Pose Flipped works.
- The action slot UI is shown even without a generated rig.
- More alerts in the UI, e.g. for duplicate rows.

Differential Revision: https://developer.blender.org/D16336

Also declare stage names for auto-completion.

- Remove time offset -- this feature was removed in Blender 2.61
- Cleanup Code
- Rename groups to collections
- Rename dupli to instancing
- Remove BGE feature
- Remove non existent `MESH_MT_CopyImagesFromLayer`
- Update operator labels

Addresses parts of T100240

D16212: Curve Tools: Ensure nested paths in exported SVG look as expected. (Authored by Johan Althoff (teetow))

- The first imported one is now set as the rendered one
- Color Attribute Node does no more specify the layer, so rendered one is used

When we enable the Rigify add-on with installed feature sets, we were
trying to register those feature sets as well, but failing because the
feature set list wasn't populated yet; It would ALWAYS be an empty list.

Moving refresh() inside get_enabled_modules_names() might be better.