Update CHANGELOG for v0.6.0

CHANGELOG.md

@@ -6,8 +6,18 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [0.6.0] – 2017-12-17
+### Added
+- #copy method for Weka::Core::Instances
+
 ### Changed
 - Load Jars with jar-dependencies instead of lock_jar gem
+- Make Weka::Core::Instances#instance_from public
+
+### Fixed
+- Weka::UnassignedTrainingInstancesError when running #classify/#cluster and
+  #distribution_for on deserialized classfiers and clusterers
 
 
 ## [0.5.0] – 2017-06-17
@@ -49,7 +59,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ## [0.1.0] – 2015-12-26
 Initial release
 
-[Unreleased]: https://github.com/paulgoetze/weka-jruby/compare/v0.5.0...HEAD
+[Unreleased]: https://github.com/paulgoetze/weka-jruby/compare/v0.6.0...HEAD
+[0.6.0]: https://github.com/paulgoetze/weka-jruby/compare/v0.5.0...v0.6.0
 [0.5.0]: https://github.com/paulgoetze/weka-jruby/compare/v0.4.0...v0.5.0
 [0.4.0]: https://github.com/paulgoetze/weka-jruby/compare/v0.3.0...v0.4.0
 [0.3.0]: https://github.com/paulgoetze/weka-jruby/compare/v0.2.0...v0.3.0