CHANGELOG.txt in rufus-scheduler-2.0.18 vs CHANGELOG.txt in rufus-scheduler-2.0.19

@@ -1,9 +1,15 @@
 
 = rufus-scheduler CHANGELOG.txt
 
 
-== rufus-scheduler - 2.0.18    released 2012/03/06
+== rufus-scheduler - 2.0.19    released 2013/05/07
+
+- raise ArgumentError on <= 0.0 "every" frequency (Thanks Lucy Fu)
+- support multiple mutexes (Thanks Rainux Luo)
+
+
+== rufus-scheduler - 2.0.18    released 2013/03/06
 
 - support for "L" in cron lines (Thanks Andrew Davey)
 - support for negative time strings (Thanks Danny "northox" Fullerton)
 - reject invalid weekdays (Thanks pazustep)