Add release-notes file

docs/release-notes/11-2-1/README.md

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+---
+title: OpenProject 11.2.1
+sidebar_navigation:
+    title: 11.2.1
+release_version: 11.2.1
+release_date: 2021-03-23
+---
+
+# OpenProject 11.2.1
+
+We released [OpenProject 11.2.1](https://community.openproject.com/versions/1472).
+The release contains several bug fixes and we recommend updating to the newest version.
+
+<!--more-->
+#### Bug fixes and changes
+
+- Fixed: Inbound Emails - Email headers not handled correctly \[[#35834](https://community.openproject.com/wp/35834)\]
+- Fixed: Configuration and display of days in My spent time widget on my Page do not match \[[#35920](https://community.openproject.com/wp/35920)\]
+- Fixed: All data lost when switching from details view to fullscreen view while creating a work package \[[#35968](https://community.openproject.com/wp/35968)\]
+- Fixed: missing translation "ja.js.units.hour.one" \[[#36269](https://community.openproject.com/wp/36269)\]
+- Fixed: Internal Error when Wiki entry contains single "!" \[[#36345](https://community.openproject.com/wp/36345)\]
+- Fixed: Missing word in deletion confirmation for placeholder users \[[#36516](https://community.openproject.com/wp/36516)\]
+- Fixed: Cannot select assignee on WP create when filtering for multi-select custom field of type list \[[#36607](https://community.openproject.com/wp/36607)\]
+- Fixed: Error message in wrong language \[[#36688](https://community.openproject.com/wp/36688)\]
+
+#### Contributions
+A big thanks to community members for reporting bugs and helping us identifying and providing fixes.
+
+Special thanks for reporting and finding bugs go to
+
+Benjamin Tey, wataru shoji

docs/release-notes/README.md

@@ -12,6 +12,13 @@ Stay up to date and get an overview of the new features included in the releases
 <!--- New release notes are generated below. Do not remove comment. -->
 <!--- RELEASE MARKER -->
 
+## 11.2.1
+
+Release date: 2021-03-23
+
+[Release Notes](11-2-1/)
+
+
 ## 11.2.0
 
 Release date: 2021-03-09