insert basic changelog

docu/docs/changelog.md

@@ -1,3 +1,33 @@
 # <center>Changelog</center>
 
 ---
+
+## Version [2.9.0] - date
+
+Functions implemented in initial version:
+
+- Multithreaded Server/Client infrastructure for alarm handling
+- Client can auto fetch connection information over bradocast from server
+- Easy configuration with YAML file for all components
+- Simple module and plugin system to extend functionality
+- Alarmpacket routing system for flexible chains of modules nd plugins
+
+### Modules
+- Mode filter to filter at specific packet types such as FMS, POCSAG, ZVEI or MSG packets
+
+### Filter
+
+
+---
+
+Zum schreiben des Changelog's siehe: [http://keepachangelog.com/de/1.0.0/](http://keepachangelog.com/de/1.0.0/)
+
+<!--
+## Version [#.#.#] - date
+### Added
+### Changed
+### Deprecated
+### Removed
+### Fixed
+### Security
+-->