update changelog

changelog.txt

@@ -1,5 +1,20 @@
 CHANGELOG - Cortex ORM
 
+1.4.2 (27.01.2017)
+*	new: self-referencing m:m relations
+*	new: support for NULL filter bind values (like `array('foo != ?',null)`)
+*	raised error level (from NOTICE to USER_ERROR)
+*	extended datetime recognition in fluid mode
+*	refactored m:m reference clearing, #34
+*	align primary key setter
+*	use mapper setter for countRel fields
+*	escape fields names in where conditions, #21
+*	Bug fix: empty belongs-to-many relation, #35
+*	Bug fix: countRel on m:1 with custom foreign keys
+*	Bug fix: touch() method data type detection
+*	Bug fix: regex character set on group by
+*	Bug fix: case-insensitive LIKE search in postgre
+
 1.4.1 (29.01.2016)
 *	new: mergeFilter method, #7
 *	fix column rel type recognition, #13