Added a CHANGELOG brag line about 'fundchannel' accepting an utxo list

CHANGELOG.md

@@ -33,6 +33,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - JSON API: the command objects that `help` outputs now contain a new string field : `category` (can be "bitcoin", "channels", "network", "payment", "plugins", "utility", "developer" for native commands, or any other new category set by a plugin).
 - Plugins: a plugin can now set the category of a newly created RPC command. This possibility has been added to libplugin.c and pylightning.
 - CLI: the human readable help is now more human and more readable : commands are sorted alphabetically and ordered by categories.
+- JSON API: A new parameter is added to `fundchannel`, which now accepts an utxo array to use to fund the channel.
 
 ### Deprecated