Change id generation to be hash based to avoid problematic word combinations (#217)

* Change id generation to be hash based to avoid problematic word combinations

* Updated changelog and removed unneeded package data entry

Author: MSeal

docs/changelog.rst

@@ -7,6 +7,18 @@ Changes in nbformat
 In Development
 ==============
 
+5.1.3
+=====
+
+- Change id generation to be hash based to avoid problematic word combinations
+- Added tests for python 3.9
+- Fixed setup.py build operations to include package data
+
+5.1.2
+=====
+
+- Fixed missing file in manifest
+
 5.1.1
 =====