update changelog for 4.2.1

Author: mluser

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Change Log
 
+# [v4.2.1](https://github.com/marklogic/marklogic-data-hub/tree/v4.2.0) (2019-02-27)
+
+
+**Fixed bugs:**
+- Unable to delete harmonize flow with the "trash" icon [\#1877](https://github.com/marklogic/marklogic-data-hub/issues/1877)
+- QuickStart - mlcp transform_param shows the wrong entity when defining input flow [\#1858](https://github.com/marklogic/marklogic-data-hub/issues/1858)
+- flow name no longer stored for errors [\#1845](https://github.com/marklogic/marklogic-data-hub/issues/1845)
+
 
 # [v4.2.0](https://github.com/marklogic/marklogic-data-hub/tree/v4.2.0) (2019-02-14)
 [Full Changelog](https://github.com/marklogic/marklogic-data-hub/compare/v4.1.1...v4.2.0)