Changes in usd-unitysdk for Unity

[2.0.0-exp.1] - 2020-12-21

Updated USD version to v20.08
Set material name in Unity to match the material name in the USD file on import (#174).
Shader exporter: added PBR export support to standard shader (#191, #206).
Shader exporter: added support for in-memory and render texture export (#125).
Shader exporter: added support for texture wrap modes (#125).
Added USDZ export from recorder clip.
Added Scope import as XForm (#154).

Fixed a crash happening when calling Scene.Read on non existing prims (#158).
Fixed an inability to refresh layers in Editor Mode (#155).
Fixed USDPayload's "Is Loaded" field in the inspector staying at false even when the payload has been loaded.
Fixed Transform Overrides export extension (USDU-124)
Fixed UsdAsset not saving changes made in the inspector (simple view).
Fixed redundant Timesamples created every frame for every prims at export.
Fixed shader import for emissive color & light baking.
Fixed wrong texture paths when exporting from packages (#125).
Fixed prefabs being reset when entering Play mode (#101).
Fixed export framerate to frames (60FPS) for more stability and improved compatibility with ArQuickLook (#170)

Special thanks to Felix Herbst for his awesome contributions on the materials import/export and USDZ exporters.

Fix regression where the default usd root was ignored, creating broken hierarchies of game objects

Fix the "Slow and safe as FBX" loading mode to perform the basis change as the FBX importer (#129)

Fix the "Decompose" function to handle matrices with very small determinant (#130, #142)
Allow exporting transparency from Standard shader (#131)
Fix the "ImportMesh" sample to works in edit mode (#128)
Handle skinned primitive that inherits skeleton data (joint indices and weight) from parent prim but don't define those themselves (#128)

New feature :

Bug fixes :