Merge pull request #2543 from greg-lunarg/chg11.2.0

Update CHANGES.md to 11.2.0 to sync with current tagging.

CHANGES.md

@@ -3,14 +3,19 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](https://semver.org/).
 
-## 11.1.0 2021-02-18
+## 11.2.0 2021-02-18
 
 ### Other changes
 * Removed Python requirement when not building with spirv-tools
 * Add support for GL_EXT_shared_memory_block
 * Implement GL_EXT_null_initializer
 * Add CMake support for Fuschia
 
+## 11.1.0 2020-12-07
+
+### Other changes
+* Added ray-tracing extension support
+
 ## 11.0.0 2020-07-20
 
 ### Breaking changes