Prepare to release v2.2.2

Author: colinodell

CHANGELOG.md

@@ -6,6 +6,8 @@ Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) princip
 
 ## [Unreleased][unreleased]
 
+## [2.2.2] - 2022-02-21
+
 ### Fixed
  - Fixed "small" integers always being cast to strings when `JSON_BIGINT_AS_STRING` is set (#17)
  - Fixed exceptions not being thrown when invalid UTF-16 escape sequences are encountered in strings
@@ -66,7 +68,8 @@ This release contains massive performance improvements of 98% or more, especiall
 ### Added
  - Initial commit
 
-[unreleased]: https://github.com/colinodell/json5/compare/v2.2.1...HEAD
+[unreleased]: https://github.com/colinodell/json5/compare/v2.2.2...HEAD
+[2.2.2]: https://github.com/colinodell/json5/compare/v2.2.1...v2.2.2
 [2.2.1]: https://github.com/colinodell/json5/compare/v2.2.0...v2.2.1
 [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