Updating version in setup.py for durabletask

Signed-off-by: Ryan Lettieri <ryanLettieri@microsoft.com>

Author: RyanLettieri

src/durabletask/setup.py

@@ -10,7 +10,7 @@
 
 
 # HISTORY.rst entry.
-VERSION = '1.0.0b3'
+VERSION = '1.0.0b4'
 
 # The full list of classifiers is available at
 # https://pypi.python.org/pypi?%3Aaction=list_classifiers