Bump ChangeLog version to 1.6.0-beta

Update ChangeLog for version bump to 1.6.0-beta.

Author: edeutsch

ChangeLog.md

@@ -60,9 +60,11 @@
 
 ### 12. BaseQueryGraph and BaseAnalysis base classes removed in favor of single QueryGraph and Analysis classes that support both pathfinder and regular queries
 
+.
 
+.
 
-
+.
 
 # Change Log TRAPI 1.5.0 (2024-05-26) -> 1.6.0-beta (2025-06-06)