changelog updated

CHANGELOG

 minerva (12.3.0~alpha.0) unstable; urgency=low
-  * Feature: added current username next to logout button in admin panel (#660)
-  * Improvement: New comment dialog does not contain content of previous comment dialog (#680)
+  * Feature: annotators are more flexible - you can define set of input and outputs used by 
+    annotator (#617)
+  * Small improvement: added current username next to logout button in admin panel (#660)
+  * Small improvement: New comment dialog does not contain content of previous comment dialog (#680)
 
 minerva (12.2.0~beta.1) unstable; urgency=medium
   * Small improvement: list of publication can be filtered by submap (#614)