Import: use friendly filenames for temp image files (fix #1026)

Fix #1007 Dont fail when using custom property animations

Export: joint extras

Change the way sampled keyframe types are determined.

Perf: revert #922

This is slightly faster.

See disucssion in #996

Profiling code was left in though.

Order of preference is now

* image.name
* if the image is in a file, the filename
* Image_n

lo...

Fix #1014

Before this, if there was one image in an ExportImage, we'd try to
use its filename a...

Import/Refactor: simplify animation code

Export: less naive file format detection (fix #986)

Import: set camera near/far (fix #1002)

Import: improve node names

Export/Refactor: delete unused functions: extract_primitive_{floor,pack}

These were used for splitting but have been unused since #726.

Blender >=2.83.9 is required for image.pixels.foreach_{get,set}.

Completely remove the compositor code in favor of the numpy code.
The new foreach_get/set for im...

...since the code that encoded images with the compositor that
triggered it is gone now.

Fixes a node with a mesh prefering the pymesh.name over the pynode.name.

A Blender node's name ...

The check image.file_format == 'JPEG' was apparently too naive to
detect real JPEGs. Photoshop ....

Previously we trusted that the image data we got here would match
the image.file_format field. T...

The file extension allows the exporter to more easily determine
the file type. It's also nicer i...

Import: use node.name for name of nodes with cameras/lights (fix #992)

Import: add "Fortune" bone heuristic

Test: test that animation names roundtrip

Fix #948 - better check between SK or object animation

The if statement here was always taken (pycamera.perspective
always has a yfov attr).

Infinite projection is handled by setting a big number in the far
field.

...instead of the camera/light name

This is always the same in one "batch" of needs_stash data, so no
need to explicitly store it.

Order doesn't matter, so this is simpler.

There's no reason to set the action on each object since it will
just get unset during the stash...

Significant code duplication between BlenderNodeAnim and BlendeBoneAnim
was eliminated.

Fortune is like Temperance but allows local rotations that aren't
aligned to the local axes. May...

Since the arma and bones for a skinned mesh are always created
before it, we don't need to defer...

fix #500 , fix #665 , fix #921

Fix #909 export of vertex groups in skinned model

Export: remove ability to undo an export (fix #570)

Would catch #953

Fixes #570

fix(init): log level critical to info

Import: guess original bind pose from inverseBindMatrices

Fix #926 Import: support all texture wrap modes

Fix #953

Remove/restore the is_solo (the star icon in the UI) property
of NLA tracks.

Bump acorn from 7.1.0 to 7.1.1 in /tests