Updated changelog

Author: kmARC

CHANGELOG.md

@@ -3,7 +3,7 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 
-## [Unreleased]
+## [v2017.01] Boston summit
 
 ### Changed
 - Image is now based on Ubuntu Xenial 16.04 LTS
@@ -14,11 +14,16 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 - Project renamed to Upstream Institute ;-)
 
 ### Added
+- `optimize-memory` for lowering runtime memory needs
 - `cleanup.sh` script that helps shrinking the image
 
 ### Fixed
 - There's no need to fiddle with network settings anymore
 
+[v2017.01]: https://github.com/kmarc/openstack-training-virtual-environment/compare/v2016.02...v2017.01
 
-[Unreleased]: https://github.com/kmarc/openstack-training-virtual-environment/compare/v2016.02...HEAD
+## [v2016.02] Barcelona summit
 
+- Initial release
+
+[v2016.02]: https://github.com/kmarc/openstack-training-virtual-environment/tree/v2016.02