prepare 1.1.3 release

ChangeLog

-Gajim 1.1.3 (TBA)
+Gajim 1.1.3 (24 April 2019)
 
   New
 

data/org.gajim.Gajim.appdata.xml.in

@@ -101,6 +101,7 @@
     <content_attribute id="money-gambling">none</content_attribute>
   </content_rating>
   <releases>
+    <release version="1.1.3" date="2019-04-23" />
     <release version="1.1.2" date="2019-01-15" />
     <release version="1.1.1" date="2018-12-23" />
     <release version="1.1.0" date="2018-11-06" />

gajim/__init__.py

 import os
 import subprocess
 
-__version__ = "1.1.2"
+__version__ = "1.1.3"
 
 IS_FLATPAK = False
 if os.path.exists('/app/share/run-as-flatpak'):