2.28.1 release (previous 2.28.0) + release notes updated by CI build …

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[ci skip-release]

doc/release-notes/official.md

@@ -1,5 +1,9 @@
 <sup><sup>*Release notes were automatically generated by [Shipkit](http://shipkit.org/)*</sup></sup>
 
+#### 2.28.1
+ - 2019-05-28 - [1 commit](https://github.com/mockito/mockito/compare/v2.28.0...v2.28.1) by [Tim van der Lippe](https://github.com/TimvdLippe) - published to [![Bintray](https://img.shields.io/badge/Bintray-2.28.1-green.svg)](https://bintray.com/mockito/maven/mockito/2.28.1)
+ - No pull requests referenced in commit messages.
+
 #### 2.28.0
  - 2019-05-28 - [3 commits](https://github.com/mockito/mockito/compare/v2.27.5...v2.28.0) by [Tim van der Lippe](https://github.com/TimvdLippe) (2), [Christoph Wagner](https://github.com/WagnerChristoph) (1) - published to [![Bintray](https://img.shields.io/badge/Bintray-2.28.0-green.svg)](https://bintray.com/mockito/maven/mockito/2.28.0)
  - Add missing 'be' in javadoc [(#1720)](https://github.com/mockito/mockito/pull/1720)

version.properties

@@ -1,8 +1,8 @@
 #Currently building Mockito version
-version=2.28.1
+version=2.28.2
 
 #Previous version used to generate release notes delta
-previousVersion=2.28.0
+previousVersion=2.28.1
 
 #Not published currently, see https://github.com/mockito/mockito/issues/962
 mockito.testng.version=1.0