Update setup.py

Author: Dyllan McCreary

setup.py

@@ -5,7 +5,7 @@
 
 setup(
     name="rigl-torch",
-    version="0.4",
+    version="0.5",
     author="Dyllan McCreary",
     author_email="[email protected]",
     description="Implementation of Google Research's \"RigL\" sparse model training method in PyTorch.",