Systematically adding some custom id to template_list using default UI_UL_list class, this one is commoly used more than once in an area, yielding collision issues if they do not have a custom id...

Unreal PSK/PSA Exporter addon: Updates for API changes (UIList). Changed doc string style from __doc__ = ... to """..."""

Updated to use UI_UL_list as template_list (also a bunch of style cleanup, still some work to do here!).

make addons blender versions consistent

added scale object on export, rebuild object on export, and check mesh for vertices's error mesh. update the menu to rework the layouts.

finished

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- Check for keymap availability to suppress warning messages when running
  blender in background mode

indentation edits and copy pyrimid from contrib (where I had made some edits), removed so this wont happen again.

Plus a few styling enhancements.

[[Split portion of a mixed commit.]]

- remove unused imports
- remove/comment unused vars
- fix for some bugs with unused vars being used

update to able to export all action set that matches the bones that some were ignore or couldn't be added in.