Bump version

Author: imjoehaines

setup.py

@@ -14,7 +14,7 @@
 
 setup(
     name='bugsnag',
-    version='4.4.0',
+    version='4.5.0',
     description='Automatic error monitoring for django, flask, etc.',
     long_description=__doc__,
     author='Simon Maynard',