Version 5.5.2

Version 5.5.0

Version 5.4.0

Version 5.3.1

Version 5.5.1

Prepare for 5.3.0 release, update changelog

Add changelog for 5.2.0 and update version

Prepare for 5.1.1 release, update changelog

Prepare for 5.1.0 release

Version bump to 5.0.8