Updated changelog

changelog.md

@@ -1,7 +1,7 @@
 # Changes made to this rendering
 This page describes changes made [here](https://github.com/SomeoneElseOSM/SomeoneElse-style), [here](https://github.com/SomeoneElseOSM/SomeoneElse-style-legend) and [here](https://github.com/SomeoneElseOSM/openstreetmap-carto-AJT), and visible [here](//map.atownsend.org.uk/maps/map/map.html).
 
-## As yet unreleased
+## 21/04/2022
 Render pitch=line as a white line.
 Render old_name on farmland if name is not set.
 Render natural=tree_group as wood, if it has no other relevant tags.