README.rdoc in revs-utils-2.1.19 vs README.rdoc in revs-utils-2.1.20

@@ -33,9 +33,10 @@
 - <b>2.1.12</b> Score computation should work with any kind of hash key
 - <b>2.1.13</b> Add more information when sourceIDs are not unique
 - <b>2.1.14-15</b> Add new engine-type field
 - <b>2.1.16-17</b> Add new format authority field and update acceptable formats
 - <b>2.1.18-19</b> Add support for newly split apart group and class fields
+- <b>2.1.20</b> Group field made multivalued
 
 == Running tests
 
 bundle exec rspec spec