Prep Changelog for 5.3.0

Signed-off-by: Jared Ledvina <jared@techsmix.net>

CHANGELOG.md

@@ -5,8 +5,11 @@ This project adheres to [Semantic Versioning](http://semver.org/)
 The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
 ## [Unreleased]
+
+## [5.3.0] - 2019-05-07
 ## Changed
 - Fixed up issues to improve Ansible Galaxy quality score (@jaredledvina) and (@michaelpporter)
+- Move to new upstream Bintray erlang repo location (@jaredledvina) and (@michaelklishin)
 
 ## [5.2.0] - 2019-03-12
 ## Added
@@ -176,7 +179,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
 First tagged release, starting at 1.0.0 since the project can be considered stable at this point.
 
-[Unreleased]: https://github.com/sensu/sensu-ansible/compare/5.2.0...HEAD
+[Unreleased]: https://github.com/sensu/sensu-ansible/compare/5.3.0...HEAD
+[5.3.0]: https://github.com/sensu/sensu-ansible/compare/5.2.0...5.3.0
 [5.2.0]: https://github.com/sensu/sensu-ansible/compare/5.1.0...5.2.0
 [5.1.0]: https://github.com/sensu/sensu-ansible/compare/5.0.2...5.1.0
 [5.0.2]: https://github.com/sensu/sensu-ansible/compare/5.0.1...5.0.2