1- 9/10: initial release version 0.1 2- 5/11: release version 0.1.2 3- 6/11: Added encoder (version 0.1.2) as well 4- 7/11: Updated WebP with head change#Ia53f845b 5- 8/12: release version 0.2.0 (head change#I3da2063b 6