Update changelog for v0.7.2

CHANGELOG.md

@@ -7,6 +7,13 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [0.7.2] – 2020-03-20
+### Changed
+- Update Weka Jar dependency to weka-dev v3.9.4  
+  Please also refer to the weka changelog for included updates & fixes:  
+  https://www.cs.waikato.ac.nz/~ml/weka/CHANGELOG-3-9-4
+- Drop shoulda-matchers as dev-dependency
+
 ## [0.7.1] – 2018-11-09
 ### Changed
 - Update Weka Jar dependency to weka-dev v3.9.3
@@ -77,7 +84,8 @@ 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/v0.7.1...HEAD
+[Unreleased]: https://github.com/paulgoetze/weka-jruby/compare/v0.7.2...HEAD
+[0.7.2]: https://github.com/paulgoetze/weka-jruby/compare/v0.7.1...v0.7.2
 [0.7.1]: https://github.com/paulgoetze/weka-jruby/compare/v0.7.0...v0.7.1
 [0.7.0]: https://github.com/paulgoetze/weka-jruby/compare/v0.6.0...v0.7.0
 [0.6.0]: https://github.com/paulgoetze/weka-jruby/compare/v0.5.0...v0.6.0