provide release notes for Ditto 3.2.1

Signed-off-by: Thomas Jäckle <thomas.jaeckle@beyonnex.io>

documentation/src/main/resources/_data/sidebars/ditto_sidebar.yml

@@ -23,6 +23,9 @@ entries:
       - title: Release Notes
         output: web
         folderitems:
+          - title: 3.2.1
+            url: /release_notes_321.html
+            output: web
           - title: 3.2.0
             url: /release_notes_320.html
             output: web
@@ -38,20 +41,20 @@ entries:
           - title: 3.0.0
             url: /release_notes_300.html
             output: web
-          - title: 2.4.2
-            url: /release_notes_242.html
-            output: web
-          - title: 2.4.1
-            url: /release_notes_241.html
-            output: web
-          - title: 2.4.0
-            url: /release_notes_240.html
-            output: web
 
             subfolders:
               - title: Archive
                 output: web
                 subfolderitems:
+                  - title: 2.4.2
+                    url: /release_notes_242.html
+                    output: web
+                  - title: 2.4.1
+                    url: /release_notes_241.html
+                    output: web
+                  - title: 2.4.0
+                    url: /release_notes_240.html
+                    output: web
                   - title: 2.3.2
                     url: /release_notes_232.html
                     output: web

documentation/src/main/resources/pages/ditto/release_notes_321.md

@@ -0,0 +1,53 @@
+---
+title: Release notes 3.2.1
+tags: [release_notes]
+published: true
+keywords: release notes, announcements, changelog
+summary: "Version 3.2.1 of Eclipse Ditto, released on 01.04.2023"
+permalink: release_notes_321.html
+---
+
+This is a bugfix release, no new features since [3.2.0](release_notes_320.html) were added.
+
+## Changelog
+
+Compared to the latest release [3.2.0](release_notes_320.html), the following changes and bugfixes were added.
+
+### Changes
+
+#### [UI - New Operations tab](https://github.com/eclipse-ditto/ditto/pull/1600)
+
+The Ditto UI was enhanced with a new "Operation" tab where the log levels of the Ditto installation can be adjusted
+on-the-fly without restarting anything.  
+This functionality was already existing in the "devops" API and now has been exposed to the Ditto UI.
+
+
+### Bugfixes
+
+This is a complete list of the
+[merged pull requests](https://github.com/eclipse-ditto/ditto/pulls?q=is%3Apr+milestone%3A3.2.1).
+
+#### [Don't use WARN log level when no policy is rolled back](https://github.com/eclipse-ditto/ditto/pull/1604)
+
+Added in Ditto 3.2.0, a policy is rolled back when it was implicitly created as part of a thing creation which failed
+for whatever reasons.  
+The `WARN` log message is however logged too many times, even if no policy was created and will be rolled back.  
+This was fixed.
+
+#### [Change notification filtering doesn't work for desired properties changes](https://github.com/eclipse-ditto/ditto/issues/1599)
+
+Desired properties were not mapped correctly when converting "thing events" to "things" and therefore filtering on 
+desired properties in e.g. connections, filtering on events, did not work.  
+This has been fixed.
+
+#### [Fix reading configured WoT TD "json template" from system property](https://github.com/eclipse-ditto/ditto/pull/1601)
+
+The system property to define a WoT TD template at property path `ditto.things.wot.to-thing-description.json-template`
+was not correctly rendered as Json Object if configured.  
+This has been fixed and can now be configured.
+
+#### [Enforcer actor ack time out handled in atomic thing create context](https://github.com/eclipse-ditto/ditto/pull/1598)
+
+Under heavy load it could happen that the policy caches in Thing "Enforcement" was misbehaving or were not correctly 
+invalidated which could lead to that creation of new things with implicit policy creation failed.  
+This has been fixed.