v1.73 release

Author: cdwensley

CHANGES.md

@@ -1,7 +1,7 @@
 # CHANGES to the 'groupoids' package 
 
-## Version 1.72 for GAP 4.12.2 (04/02/23) 
- * (04/02/23) moved attempt at double groupoids to XMod 
+## Version 1.73 for GAP 4.12.2 (09/02/23) 
+ * (09/02/23) first attempt at basic double groupoids 
  * (27/01/23) added RegularActionHomomorphismGroupoid and used in gpdhom.tst 
  * (23/12/22) changed email address and other personal details