Update changelog

Author: adamwathan

CHANGELOG.md

@@ -9,6 +9,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Nothing yet!
 
+## [1.8.8] - 2020-09-11
+
+### Fixed
+
+- Register dark mode plugin outside of `resolveConfig` code path ([#2368](https://github.com/tailwindlabs/tailwindcss/pull/2368))
+
 ## [1.8.7] - 2020-09-10
 
 ### Fixed
@@ -903,7 +909,9 @@ No release notes
 
 - Everything!
 
-[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v1.8.6...HEAD
+[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v1.8.8...HEAD
+[1.8.8]: https://github.com/tailwindlabs/tailwindcss/compare/v1.8.7...v1.8.8
+[1.8.7]: https://github.com/tailwindlabs/tailwindcss/compare/v1.8.6...v1.8.7
 [1.8.6]: https://github.com/tailwindlabs/tailwindcss/compare/v1.8.5...v1.8.6
 [1.8.5]: https://github.com/tailwindlabs/tailwindcss/compare/v1.8.4...v1.8.5
 [1.8.4]: https://github.com/tailwindlabs/tailwindcss/compare/v1.8.3...v1.8.4