Prepare to release v2.2.0

Author: colinodell

CHANGELOG.md

@@ -6,6 +6,13 @@ Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) princip
 
 ## [Unreleased][unreleased]
 
+## [2.2.0] - 2020-11-29
+### Added
+ - Added support for PHP 8.0
+
+### Removed
+ - Removed support for PHP 5.6 and 7.0
+
 ## [2.1.0] - 2019-03-28
 ### Added
  - Added `.phpstorm.meta.php` for better code completion
@@ -51,7 +58,8 @@ This release contains massive performance improvements of 98% or more, especiall
 ### Added
  - Initial commit
 
-[unreleased]: https://github.com/colinodell/json5/compare/v2.1.0...HEAD
+[unreleased]: https://github.com/colinodell/json5/compare/v2.2.0...HEAD
+[2.2.0]: https://github.com/colinodell/json5/compare/v2.1.0...v2.2.0
 [2.1.0]: https://github.com/colinodell/json5/compare/v2.0.0...v2.1.0
 [2.0.0]: https://github.com/colinodell/json5/compare/v1.0.5...v2.0.0
 [1.0.5]: https://github.com/colinodell/json5/compare/v1.0.4...v1.0.5