Merge pull request #28 from dhendriks/25-change-callbacks-to-use-functional-interfaces

#24 #25 Reworked statistics and callbacks.

Author: dhendriks

CHANGES.md

@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 ## [2.0.1] - unreleased
 
 * Improved license headers, and related changes.
+* Completely reworked the statistics callbacks API.
+* No statistics callbacks are registered by default any more, but they are still available to be registered manually.
+* Added statistics callbacks for operation cache statistics, maximum used BDD node statistics and continuous performance statistics.
+* Removed non-callback use of garbage collection statistics, variable reordering statistics and continuous performance statistics.
+* The maximum used BDD nodes statistics are now properly copied when a `JFactory` is cloned.
 
 ## [2.0.0] - 2021-10-28
 * Added CHANGES.md to track changes between releases.