doc/82-Changelog.md: add a changelog

doc/82-Changelog.md

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+<a id="Changelog"></a>Changelog
+===============================
+
+1.1.0
+-----
+
+### Fixed a lot of issues and related features
+* You can find issues and feature requests related to this release on our
+  [roadmap](https://dev.icinga.org/projects/icingaweb2-module-director/roadmap)
+
+### Icinga Agent handling
+* A lot of effort has been put into making config deployment easier for
+  environments with lots of Icinga Agents
+* Related bugs have been fixed, the generated configuration should now work fine
+  in distributed environments
+* 
+
+### Apply Rules
+* It's now possible to work with apply rules in various places
+
+### Notifications
+* All components required to deploy notifications are now available. ENV for
+  commands is still missing, however it's pretty easy to work around this
+
+### Automation
+* Job Scheduler and Job Runner have been introduced. Import, Sync, Deploy and
+  run Housekeeping in the background with full control and feedback in the GUI
+* There is a new intelligent `purge` option allowing one to purge only those
+  objects that vanished at involved Import Sources between multiple Import and
+  Sync Runs.
+
+### More
+
+* We are still preparing the release, changelog is incomplete at the time of
+  this writing