Update version, changes

docs/reference/changes.md

 # Change log
 
+## 1.3.8
+
+- Changes to support better migration and validation of config between versions 
+  of type implementations.
+
 ## 1.3.6
 
 - Fix a PHP 8.1 warning in certain situations

info.xml

@@ -15,7 +15,7 @@
     <url desc="Licensing">http://www.gnu.org/licenses/agpl-3.0.html</url>
   </urls>
   <releaseDate>2023-11-24</releaseDate>
-  <version>1.3.7</version>
+  <version>1.3.8</version>
   <develStage>stable</develStage>
   <compatibility>
     <ver>5.64</ver>