[REL] v1.0

Signed-off-by: Matthew Low <Matthew.Low@dreamworks.com>

Author: matthewlow-dwa

CHANGELOG.md

@@ -0,0 +1,13 @@
+# Changelog
+
+## [v1.0] - 2025-08-03
+
+This is the initial official release of the OpenPBR Shader Playground asset for the Academy Software Foundation's [Digital Production Example Library (DPEL)](http://dpel.aswf.io/shader-playground).
+
+OpenPBR Shader Playground is contributed to DPEL by Adobe under the ASWF Digital Assets License v1.1. Please see [LICENSE.md](LICENSE.md) for usage and copyright details.
+
+* [Initially created by Nikie Monteleone](https://www.artstation.com/artwork/DvW5gA) using Adobe Substance and Maya with Arnold, with contributions from Vladimir Petkovic
+* Converted to OpenUSD by Charles Anderson using Omniverse
+* Restructured to decouple OpenUSD (`.usda`) and MaterialX (`.mtlx`) domains by Andréa Machizaud
+* Updated to OpenPBR v1.1 specification by Andréa Machizaud
+* Additional contributions by Matthew Low