Update changelog.

Author: mrstegeman

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+## [0.12.2] - 2020-03-27
+### Added
+- Support OPTIONS requests to allow for CORS.
+
 ## [0.12.1] - 2020-01-13
 ### Changed
 - Abstracted WebSocket subscriber class to allow library to work with other web frameworks.
@@ -36,8 +40,9 @@
 ### Changed
 - Property, Action, and Event description now use `links` rather than `href`. - [Spec PR](https://github.com/mozilla-iot/wot/pull/119)
 
-[Unreleased]: https://github.com/mozilla-iot/webthing-python/compare/v0.12.1...HEAD
-[0.12.0]: https://github.com/mozilla-iot/webthing-python/compare/v0.12.0...v0.12.1
+[Unreleased]: https://github.com/mozilla-iot/webthing-python/compare/v0.12.2...HEAD
+[0.12.2]: https://github.com/mozilla-iot/webthing-python/compare/v0.12.1...v0.12.2
+[0.12.1]: https://github.com/mozilla-iot/webthing-python/compare/v0.12.0...v0.12.1
 [0.12.0]: https://github.com/mozilla-iot/webthing-python/compare/v0.11.3...v0.12.0
 [0.11.3]: https://github.com/mozilla-iot/webthing-python/compare/v0.11.2...v0.11.3
 [0.11.2]: https://github.com/mozilla-iot/webthing-python/compare/v0.11.1...v0.11.2