Update changelog

Author: thecrypticace

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- Nothing yet!
+
+## [3.1.6] - 2022-07-11
+
 ### Fixed
 
 - Fix usage on Node 12.x ([b4e637e](https://github.com/tailwindlabs/tailwindcss/commit/b4e637e2e096a9d6f2210efba9541f6fd4f28e56))
@@ -2007,7 +2011,8 @@ No release notes
 
 - Everything!
 
-[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v3.1.5...HEAD
+[unreleased]: https://github.com/tailwindlabs/tailwindcss/compare/v3.1.6...HEAD
+[3.1.6]: https://github.com/tailwindlabs/tailwindcss/compare/v3.1.5...v3.1.6
 [3.1.5]: https://github.com/tailwindlabs/tailwindcss/compare/v3.1.4...v3.1.5
 [3.1.4]: https://github.com/tailwindlabs/tailwindcss/compare/v3.1.3...v3.1.4
 [3.1.3]: https://github.com/tailwindlabs/tailwindcss/compare/v3.1.2...v3.1.3