Update CHANGELOG

CHANGELOG.md

@@ -2,9 +2,15 @@
 
 This log documents significant changes for each release.
 
+## Not yet released
+
+* Fix #69 by improving import of custom reference sets in which there are missing custom field values
+* Improve build process for uberjar to ensure backwards compatibility with JDK>=11
+* Update to latest [trud](https://github.com/wardle/trud) library as the NHS TRUD service now supports SHA256 for integrity checks on downloaded files 
+
 ## [1.4.1425] - 2024-11-07
 
-* Improvements to ranked-search
+* Improve ranked-search
 * Add support for Lucene 10 for testing and evaluation via a runtime switch
 
 ## [1.4.1420] - 2024-10-19