changelog updated

CHANGELOG

 minerva (12.1.0~alpha.0) unstable; urgency=medium
+  * Feature: There is alternativa OpenLayers map engine available
   * Feature: database connection configuration (login, password, host, etc) 
     can be modified using /etc/minerva/db.properties file
+  * Small improvement: multiple x-frame domains are allowed
+  * Small improvement: No duration of the text notification in overlay tab
+  * Bug fix: clicking on help button opened new window with every click 
+    (that had to be closed separately)
 
  -- Piotr Gawron <piotr.gawron@uni.lu>  Mon, 9 Apr 2018 13:00:00 +0200