| **Introduce features?** | **yes** |
| **Fix bugs?** | **yes** |
+#### Api4 Extension now included
+The [Api v4 extension](https://github.com/civicrm/org.civicrm.api4) is now included in the CiviCRM download.
+It provides the latest version of CiviCRM's api for integration with extensions and other software; is is still under active development but considered complete enough to use.
+Because it is not yet used by CiviCRM core, it is disabled by default.
+If you install an extension which requires this api, it will be enabled automatically.
+
## <a name="features"></a>Features
### Core CiviCRM
When a user editing a custom field that uses an option group, you may now
switch to any non-reserved option groups.
+- **Further Fix for updating custom field when not linked to an option group.
+ ([12789](https://github.com/civicrm/civicrm-core/pull/12789))**
+
+ Further following fix from 12729 to ensure that the Edit Custom Field form works when
+ not linked to an option group.
+
- **Upgrader - When updating message templates, identify them by name
([12674](https://github.com/civicrm/civicrm-core/pull/12674))**
displayed properly, Money is formatted properly and the Cost field is
displayed.
-- **[dev/core#346](https://lab.civicrm.org/dev/core/issues/346) Fix Online Pay Now links when used from Dashboard.
- ([12777](https://github.com/civicrm/civicrm-core/pull/12777))**
-
- This fixes an issue with the Online Paynow link when the dashboard is access by an annonmyous user using a checksum link.
-
### CiviMail
- **[CRM-21768](https://issues.civicrm.org/jira/browse/CRM-21768) NOFOLLOW
- **[infrastructure/ops#842](https://lab.civicrm.org/infrastructure/ops/issues/842)
RSS feed and Getting Started are not displaying in dashlets
- ([https://github.com/civicrm/civicrm-core/pull/12756])**
+ ([12756](https://github.com/civicrm/civicrm-core/pull/12756))**
- **[dev/core#353](https://lab.civicrm.org/dev/core/issues/353) As of 5.4.0,
Activity Search gives an empty result set
activity contacts had different addresses so that only one row is shown per
Activity.
+- **[dev/core#326] (https://lab.civicrm.org/dev/core/issues/326) Fatal Error in Section Headers
+of Contribution Detail report
+([12766](https://github.com/civicrm/civicrm-core/pull/12766))**
+
+ Fixes a DB fatail error when running the contribution detail report and selectng contact name as a
+ section header for the report.
+
### CiviCase
- **[dev/core#289](https://lab.civicrm.org/dev/core/issues/289) CiviCase
Fixes a bug for multilingual mode where radio options in price sets with empty
pre/post help were displaying pre/post help as ':' so that no ':' are shown.
+- **[dev/core#346](https://lab.civicrm.org/dev/core/issues/346) Fix Online Pay Now links when used from Dashboard.
+ ([12777](https://github.com/civicrm/civicrm-core/pull/12777))**
+
+ This fixes an issue with the Online Paynow link when the dashboard is access by an annonmyous user using a checksum link.
+
### CiviEvent
- **Fix + Add test for exporting location types with changed names
This release was developed by the following code authors:
-AGH Strategies - Andrew Hunt; Agileware - Alok Patel; Australian Greens - Seamus
+AGH Strategies - Andie Hunt; Agileware - Alok Patel; Australian Greens - Seamus
Lee; Calibrate - Wannes De Roy; Caltha - Tomasz Pietrzkowski; Chris Burgess;
CiviCoop - Jaap Jansma; CiviCRM - Coleman Watts, Tim Otten; CiviDesk - Sunil
-Pawar, Yashodha Chaku; CompuCorp - Camilo Rodriguez, Mukesh Ram; Coop SymbioTIC
-- Mathieu Lutfy; Electronic Frontier Foundation - Mark Burdett; eQuality
+Pawar, Yashodha Chaku; CompuCorp - Camilo Rodriguez, Mukesh Ram; Coop SymbioTIC -
+Mathieu Lutfy; Electronic Frontier Foundation - Mark Burdett; eQuality
Technology - Greg Rundlett; Freeform Solutions - Herb van den Dool; Fuzion -
Jitendra Purohit; JMA Consulting - Monish Deb; John Kingsnorth; Left Join Labs -
Sean Madsen; Megaphone Technology Consulting - Jon Goldberg; MJW Consulting -
## <a name="feedback"></a>Feedback
-These release notes are edited by Alice Frumin and Andrew Hunt. If you'd like
+These release notes are edited by Alice Frumin and Andie Hunt. If you'd like
to provide feedback on them, please log in to https://chat.civicrm.org/civicrm
and contact `@agh1`.