Bump version to 1.1.1.dev

Author: alvarosg

setup.py

@@ -27,7 +27,7 @@
 
 setup(
     name="graph_nets",
-    version="1.1.0",
+    version="1.1.1.dev",
     description="Library for building graph networks in Tensorflow and Sonnet.",
     long_description=description,
     author="DeepMind",