update release number in setup.py (#1503)

Author: shaunagm

setup.py

@@ -87,7 +87,7 @@ def main():
 
     setup(
         name="parsons",
-        version="5.0.0",  # ensure this version number is in format of n.n.n, not n or n.n
+        version="5.1.0",  # ensure this version number is in format of n.n.n, not n or n.n
         author="The Movement Cooperative",
         author_email="info@movementcooperative.org",
         url="https://github.com/move-coop/parsons",