Release 2.4.2

Also adds version info for post-svn releases

Author: rtburns-jpl

release_history.py

@@ -54,7 +54,15 @@
             Tag('2.1.0',  '2366', '20170806'),
             Tag('2.2.0',  '2497', '20180714'),
             Tag('2.2.1',  '2517', '20181221'),
-            Tag('2.3',    '2531', '20190112'))
+            Tag('2.3',    '2531', '20190112'),
+            # git migration
+            Tag('2.3.1', '', '20190220'),
+            Tag('2.3.2', '', '20190618'),
+            Tag('2.3.3', '', '20200402'),
+            Tag('2.4.0', '', '20200730'),
+            Tag('2.4.1', '', '20200915'),
+            Tag('2.4.2', '', '20201116'),
+)
 
 
 release_version = releases[-1].version