bump v0.5.2

Author: andreped

setup.py

@@ -5,7 +5,7 @@
 
 setuptools.setup(
     name="gradient-accumulator",
-    version="0.5.1",
+    version="0.5.2",
     author="André Pedersen and David Bouget and Javier Pérez de Frutos and Tor-Arne Schmidt Nordmo",
     author_email="andrped94@gmail.com",
     description="Package for gradient accumulation in TensorFlow",