Update CHANGELOG for 0.11.6

CHANGELOG.md

@@ -1,6 +1,11 @@
 # Change Log
 All notable changes to this project will be documented in this file.
 
+### [0.11.6] - 2018-04-30
+
+### Important
+The `0.11.5` version was tagged on the wrong branch. Therefore you should use this version instead!
+
 ## [0.11.5] - 2018-03-13
 ### Changed
 - Convert time to UTC if UTC mode is enabled. [#111](https://github.com/markuspoerschke/iCal/issues/111)
@@ -58,6 +63,7 @@ All notable changes to this project will be documented in this file.
 - **Breaking Change:** Changed signature of the ```Event::setOrganizer``` method. Now there is is only one parameter that must be an instance of ```Property\Organizer```.
 - Updated install section in README.md [#54](https://github.com/markuspoerschke/iCal/pull/53)
 
+[0.11.6]: https://github.com/markuspoerschke/iCal/compare/0.11.4...0.11.6
 [0.11.5]: https://github.com/markuspoerschke/iCal/compare/0.11.4...0.11.5
 [0.11.4]: https://github.com/markuspoerschke/iCal/compare/0.11.3...0.11.4
 [0.11.3]: https://github.com/markuspoerschke/iCal/compare/0.11.2...0.11.3