Merge branch 'changelog' into 'devel_13.1.x'

changelog updated

See merge request !831

CHANGELOG

@@ -8,7 +8,7 @@ minerva (13.1.1) stable; urgency=medium
   * Bug fix: user wasn't logged out in all tabs when the log out event appeard 
     in only one of them (#847)
 
- -- Piotr Gawron <piotr.gawron@uni.lu>  Fri, 28 Jun 2019 17:00:00 +0200
+ -- Piotr Gawron <piotr.gawron@uni.lu>  Tue, 2 Jul 2019 19:00:00 +0200
 
 minerva (13.1.0) stable; urgency=medium
   * Feature: annotators are more flexible - you can define set of input and