Update changelog

Signed-off-by: mulhern <[email protected]>

CHANGES.txt

@@ -24,7 +24,20 @@ Recommended release for development: Fedora 38
 - In D-Bus monitor script, get the initial GetManagedObjects result early:
   https://github.com/stratis-storage/testing/pull/195
 
-- Use mixin class to share D-Bus monitor code between test scripts:
+- In D-Bus monitor script, use set-operations to calculate differences:
+  https://github.com/stratis-storage/testing/pull/202
+
+- In D-Bus monitor script, log while trying to get initial D-Bus connection:
+  https://github.com/stratis-storage/testing/pull/203
+
+- In D-Bus monitor script, use a special value to indicate a missing interface:
+  https://github.com/stratis-storage/testing/pull/205
+
+- Use mixin classes to shere code for checks in tearDown and setUp:
+  https://github.com/stratis-storage/testing/pull/206
+  https://github.com/stratis-storage/testing/pull/204
+  https://github.com/stratis-storage/testing/pull/201
+  https://github.com/stratis-storage/testing/pull/200
   https://github.com/stratis-storage/testing/pull/197
 
 - Add setup.py and setup.cfg to the repo: