Update changelog

CHANGES.md

@@ -5,6 +5,8 @@
 ### Features
 
 * ancestral: Add `--seed` argument to enable deterministic inference of root states by TreeTime. [#1690][] (@huddlej)
+* export v2: The string "none" is now an invalid value for `--color-by-metadata` and `--metadata-columns` options to prevent clashes with Auspice's internal use of "none". [#1113][] (@joverlee521)
+* schema: The string "none" is now an invalid branch label, node_attr key, and coloring key. [#1113][] (@joverlee521)
 
 ### Bug Fixes
 
@@ -18,6 +20,7 @@
 * `augur curate format-dates --expected-date-formats` help text has been improved with clarifications regarding how values provided interact with builtin formats and how to match masked date parts. [#1707][], [#1718][] (@victorlin)
 * parse: Transform strain names the same way in both metadata and sequences instead of only transforming sequences. [#1712][] (@huddlej)
 
+[#1113]: https://github.com/nextstrain/augur/pull/1113
 [#1688]: https://github.com/nextstrain/augur/pull/1688
 [#1690]: https://github.com/nextstrain/augur/pull/1690
 [#1707]: https://github.com/nextstrain/augur/issues/1707