Merge branch 'hotfix-0.9.7.4'

Author: Erik Nielsen

packages/pygsti/_version.py

@@ -4,4 +4,4 @@
 #    in the file "license.txt" in the top-level pyGSTi directory
 #*****************************************************************
 """ PyGSTi version number """
-__version__ = "0.9.7.3"
+__version__ = "0.9.7.4"

packages/pygsti/objects/dataset.py

@@ -917,7 +917,7 @@ def build_repetition_counts(self):
 
 
     def add_count_dict(self, circuit, countDict, overwriteExisting=True,
-                       recordZeroCnts=False, aux=None):
+                       recordZeroCnts=True, aux=None):
         """
         Add a single circuit's counts to this DataSet