Merge pull request #17925 from seamuslee001/5.28

Add release-notes/5.27.3

release-notes.md

@@ -26,6 +26,15 @@ Released August 5, 2020
 - **[Credits](release-notes/5.28.0.md#credits)**
 - **[Feedback](release-notes/5.28.0.md#feedback)**
 
+## CiviCRM 5.27.3
+
+Released July 23, 2020
+
+- **[Synopsis](release-notes/5.27.3.md#synopsis)**
+- **[Bugs resolved](release-notes/5.27.3.md#bugs)**
+- **[Credits](release-notes/5.27.3.md#credits)**
+- **[Feedback](release-notes/5.27.3.md#feedback)**
+
 ## CiviCRM 5.27.2
 
 Released July 14, 2020

release-notes/5.27.3.md

+# CiviCRM 5.27.3
+
+Released July 23, 2020
+
+- **[Synopsis](#synopsis)**
+- **[Bugs resolved](#bugs)**
+- **[Credits](#credits)**
+- **[Feedback](#feedback)**
+
+## <a name="synopsis"></a>Synopsis
+
+| *Does this version...?*                                         |         |
+|:--------------------------------------------------------------- |:-------:|
+| Fix security vulnerabilities?                                   |   no    |
+| Change the database schema?                                     |   no    |
+| Alter the API?                                                  |   no    |
+| Require attention to configuration options?                     |   no    |
+| **Fix problems installing or upgrading to a previous version?** | **yes** |
+| Introduce features?                                             |   no    |
+| Fix bugs?                                                       |   no    |
+
+## <a name="bugs"></a>Bugs resolved
+
+* **_Upgrade_: Fix "no such field" error involving `civicrm_custom_field`.`serialize`
+  ([dev/core#1846](https://lab.civicrm.org/dev/core/-/issues/1846):
+  [#17876](https://github.com/civicrm/civicrm-core/pull/17876),
+  [#17907](https://github.com/civicrm/civicrm-core/pull/17907),
+  [#17909](https://github.com/civicrm/civicrm-core/pull/17909))**
+
+## <a name="credits"></a>Credits
+
+<!-- X: TIP: In buildkit, the CLI command civicredits.php can help autocomplete contributor names with the typical formatting.  -->
+
+This release was developed by the following authors and reviewers:
+
+Wikimedia Foundation - Eileen McNaughton; Tadpole Collective - Kevin Cristiano; Shane Bill; JMA
+Consulting - Seamus Lee; CiviCRM - Coleman Watts, Tim Otten
+
+## <a name="feedback"></a>Feedback
+
+These release notes are edited by Tim Otten and Andrew Hunt.  If you'd like to
+provide feedback on them, please login to https://chat.civicrm.org/civicrm and
+contact `@agh1`.