Update changelog

Author: alicerunsonfedora

MCMaps/Resources/Alidade.docc/Changelogs/Changelog-Unreleased.md

@@ -15,7 +15,16 @@ This document is used to cover upcoming features and changes to Alidade
 that aren't available in a particular release yet. These will change over
 time as new versions and features are added.
 
+### Map
+
+- Maps will now group pins together in a cluster if they're close enough
+  to each other. Player-crated pins will be clustered together in their
+  own category; Bluemap death markers and Bluemap server markers are
+  grouped in their own clusters, respectively.
+
 ### Pins
 
 - Players can now select custom icons to use when displayed in the list
   and grid views in the library, along with their appearance on the map.
+- In the Red Window design, players can now tap on a photo in the detail
+  view for any pin to preview it in full detail.