Update changelog

Author: adamwathan

CHANGELOG.md

@@ -9,6 +9,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Nothing yet!
 
+## [2.0.0-alpha.15] - 2020-11-11
+
+### Added
+
+- Added `ring-inset` utility for rendering rings as inset shadows ([879f088](https://github.com/tailwindlabs/tailwindcss/commit/879f088))
+
+### Changed
+
+- `ringWidth` utilities always reset ring styles to ensure no accidental variable inheritance through the cascade ([879f088](https://github.com/tailwindlabs/tailwindcss/commit/879f088))
+
 ## [2.0.0-alpha.14] - 2020-11-11
 
 ### Added
@@ -1160,7 +1170,8 @@ No release notes
 
 - Everything!
 
-[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v2.0.0-alpha.14...HEAD
+[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v2.0.0-alpha.15...HEAD
+[2.0.0-alpha.15]: https://github.com/tailwindlabs/tailwindcss/compare/v2.0.0-alpha.14...v2.0.0-alpha.15
 [2.0.0-alpha.14]: https://github.com/tailwindlabs/tailwindcss/compare/v2.0.0-alpha.13...v2.0.0-alpha.14
 [2.0.0-alpha.13]: https://github.com/tailwindlabs/tailwindcss/compare/v2.0.0-alpha.12...v2.0.0-alpha.13
 [2.0.0-alpha.12]: https://github.com/tailwindlabs/tailwindcss/compare/v2.0.0-alpha.11...v2.0.0-alpha.12