change log

CHANGELOG.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Added
 - Daily statistical data will now appear under the parameter selection list.
 - Data tables accordion shows a table for a secondary instantaneous value parameter data when a second parameter (that has data) is selected.
+- Retrieve data controls now show a radio button for secondary parameter data when appropriate.
 
 ### Changed
 - Data download component was converted to Vue.