Release 1.2.0 (#20)

Update VERSION to 1.2.0, add CHANGELOG

Author: phanak-sap

CHANGELOG.md

@@ -0,0 +1,15 @@
+# Changelog
+
+# 1.2.0
+
+  * 69a3ce1 - model: reword error messages for assoc. sets - Jakub Filak 
+  * e592063 - model: fix searching for Assoc. Set without NS - Jakub Filak 
+  * 36cb45f - service: do not search for Ass. Sets in own namespace - Jakub Filak 
+  * a280798 - service: add implementation of count - FedorSelitsky 
+
+# 1.1.2
+
+  * e69fee6 - client: correctly detect MIME of $metadata - Jakub Filak
+  * 9c23ff8 - dependencies: Update setup.py - minimal lxml instead of pinned. - Petr Hanak
+
+# 1.1.1 - First PIP package release 

VERSION

@@ -1 +1 @@
-1.1.2
+1.2.0