Update CHANGELOG.md

Author: De-Panther

Packages/webxr/CHANGELOG.md

@@ -6,6 +6,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.3.1] - 2020-11-07
+### Added
+- emscripten browser object pause/resume when switching sessions.
+
+### Changed
+- Replaced Inline XR Session with window.rAF.
+
 ## [0.3.0] - 2020-11-01
 ### Added
 - Support for XR providers in the editor.
@@ -17,4 +24,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [0.2.0] - 2020-10-30
 ### Added
 - Some XR SDK features, like the subsystems. Still not fully support the XR SDK.
-- Info about WebXR Interactions in the README file.
+- Info about WebXR Interactions in the README file.