Update changelog

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- Nothing yet!
+
+## [2.0.0-alpha.3] - 2020-10-27
+
 ### Added
 
 - Support flattening deeply nested color objects ([#2148](https://github.com/tailwindlabs/tailwindcss/pull/2148))
@@ -1066,7 +1070,8 @@ No release notes
 
 - Everything!
 
-[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v2.0.0-alpha.2...HEAD
+[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v2.0.0-alpha.3...HEAD
+[2.0.0-alpha.3]: https://github.com/tailwindlabs/tailwindcss/compare/v2.0.0-alpha.2...v2.0.0-alpha.3
 [2.0.0-alpha.2]: https://github.com/tailwindlabs/tailwindcss/compare/v2.0.0-alpha.1...v2.0.0-alpha.2
 [1.9.6]: https://github.com/tailwindlabs/tailwindcss/compare/v1.9.5...v1.9.6
 [2.0.0-alpha.1]: https://github.com/tailwindlabs/tailwindcss/compare/v1.9.5...v2.0.0-alpha.1