0.16.21 release (previous 0.16.20) + release notes updated [ci skip]

docs/release-notes.md

@@ -1,5 +1,15 @@
 <sup><sup>*Release notes were automatically generated by [Shipkit](http://shipkit.org/)*</sup></sup>
 
+#### 0.16.21
+ - 2019-03-17 - [14 commits](https://github.com/mockito/shipkit-example/compare/v0.16.20...v0.16.21) by [shipkit.org automated bot](https://github.com/shipkit-org) (10), [Marcin Stachniuk](https://github.com/mstachniuk) (4) - published to [![Bintray](https://img.shields.io/badge/Bintray-0.16.21-green.svg)](https://bintray.com/shipkit/examples/basic/0.16.21)
+ - Trigger publication, to release Javadocs [(#213)](https://github.com/mockito/shipkit-example/pull/213)
+ - Enable Shipping Javadoc, bump Gradle version to 4.0 [(#212)](https://github.com/mockito/shipkit-example/pull/212)
+ - Version of shipkit upgraded to 2.2.0 [(#211)](https://github.com/mockito/shipkit-example/pull/211)
+ - Version of shipkit upgraded to 2.1.8 [(#210)](https://github.com/mockito/shipkit-example/pull/210)
+ - Version of shipkit upgraded to 2.1.7 [(#209)](https://github.com/mockito/shipkit-example/pull/209)
+ - Version of shipkit upgraded to 2.1.6 [(#208)](https://github.com/mockito/shipkit-example/pull/208)
+ - Version of shipkit upgraded to 2.1.5 [(#207)](https://github.com/mockito/shipkit-example/pull/207)
+
 #### 0.16.20
  - 2019-02-23 - [2 commits](https://github.com/mockito/shipkit-example/compare/v0.16.19...v0.16.20) by [Marcin Stachniuk](https://github.com/mstachniuk) - published to [![Bintray](https://img.shields.io/badge/Bintray-0.16.20-green.svg)](https://bintray.com/shipkit/examples/basic/0.16.20)
  - Add comment in SomeApi, bump gradle to 3.5 [(#206)](https://github.com/mockito/shipkit-example/pull/206)

version.properties

@@ -1,2 +1,2 @@
-version=0.16.21
-previousVersion=0.16.20
+version=0.16.22
+previousVersion=0.16.21