Upgrade to r112

[akaszynski]

Upgrade to threejs r112.

Remaining wrappers

• PMREMGenerator (API changed from method to class, delaying wrapper)
• LightProbe
• LightProbeHelper
• PositionalAudioHelper
• SphericalHarmonics3
• InstancedMesh
• AmbientLightProbe
• HemisphereLightProbe
• PointLightShadow
• WebGLMultisampleRenderTarget
• WebGLMultiviewRenderTarget
• DataTexture2DArray
• WebGLMultiview

Changes

• .drawMode has been removed

Bonus

• Resolve cannot use cubemap in pythreejs #288 by adding a loader for CubeTexture. Need this for the light probe tests.

[akaszynski]

@maartenbreddels, I'm going to try to support r112 first and then go from there.

@jasongrout, I'd like to help maintain this repository. Please message me at akascap@gmail.com if you think that's possible. I think this is an excellent repository and it's been 6 months since the last commit and around a year since a release. I'd really like to help.

[jasongrout]

Awesome, thanks for volunteering! @vidartf is the current main maintainer. @vidartf?

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.86%. Comparing base (a78cb57) to head (9b34f5f).
Report is 56 commits behind head on master.

Additional details and impacted files

@@ Coverage Diff @@ ## master #376 +/- ## ======================================= Coverage 70.86% 70.86% ======================================= Files 23 23 Lines 834 834 ======================================= Hits 591 591 Misses 243 243 

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[akaszynski]

@jasongrout, I've not heard back from @vidartf and he's not been active on github as of late.

Is there any chance I can get hold of one of the other maintainers?

[jasongrout]

@vidartf was in the ipywidgets dev meeting this morning, so pinging him again.

[vidartf]

Hi @akaszynski , I'm around, and I'm more than happy to have others help out here! Thanks for volunteering! I am going to do an effort on this repo in the few coming days to add support for ipywidgets 8, but do not really plan to be working on features beyond that, so happy to leave that to you!

If you need me on a quicker turn-around than me checking my GH pings, you should be able to find my email address on the commits. Let's get a few PR's/commits through, and then get you set up with commit/publish rights after. Did you want me to review this PR in its current state?