Update CHANGELOG.md

CHANGELOG.md

@@ -10,7 +10,7 @@ These changes are available in the [master branch](https://github.com/PrefectHQ/
 
 ### Enhancements
 
-- None
+- Enhanced treatment of nested and ordered constant values - [#1829](https://github.com/PrefectHQ/prefect/pull/1829)
 
 ### Task Library
 
@@ -51,7 +51,6 @@ Released on Dec 11, 2019.
 - Add `prefect agent install` option to output `supervisord.conf` file for Local Agent - [#1819](https://github.com/PrefectHQ/prefect/pull/1819)
 - Add convenience `parents()` and `children()` classmethods to all State objects for navigating the hierarchy - [#1784](https://github.com/PrefectHQ/prefect/pull/1784)
 - Add new `not_all_skipped` trigger and set it as the default for merge tasks - [#1768](https://github.com/PrefectHQ/prefect/issues/1768)
-- Enhanced treatment of nested and ordered constant values - [#1829](https://github.com/PrefectHQ/prefect/pull/1829)
 
 ### Task Library