add projeciton directionality changelog

Author: brs96

CHANGELOG.md

@@ -4,6 +4,7 @@
 1. Add a new get_relationship_properties_keys tool.
 2. Add targetNode filtering for longest_path.
 3. Add support for similarity algorithms.
+4. Add relationship directionality used by graph projection as an optional parameter to all appropriate algorithms. This include all algorithms that support both directed and undirected graphs and behave differently.
 
 ### Bug Fixes
 1. Return node names in several path algorithms that only returned node ids.