Add and update changes files for #28846.

This ticket finishes the implementatoin of #28180 and adds the new
STATUS message from #28846.

See: https://bugs.torproject.org/28846

changes/ticket28180

@@ -1,3 +1,3 @@
   o Minor features (pluggable transports):
     - Add support for logging to Tor's logging subsystem from a pluggable
-      transport process. Partial implementation for ticket 28180
+      transport process. Closes ticket 28180

changes/ticket28846

@@ -0,0 +1,3 @@
+  o Minor features (pluggable transports):
+    - Add support for emitting STATUS updates to Tor's control port from a
+      pluggable transport process. Closes ticket 28846.