SOLR-14330: ExpandComponent now supports an expand.nullGroup=true option

Author: hossman

solr/CHANGES.txt

@@ -207,7 +207,7 @@ Consult the LUCENE_CHANGES.txt file for additional, low level, changes in this r
 
 New Features
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-(No changes)
+* SOLR-14330: ExpandComponent now supports an expand.nullGroup=true option (hossman)
 
 Improvements
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