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-rc1 (head change#Ia5475247)
6-     : Updated WebP with head change#I3da2063b
7- 3/13: Updated WebP with head change#I9e5ae737
8- 8/13: Release version 0.3.1 (head change#Idea3464b)
9- 9/13: Fix memleak in WebPIDelete() (change#Id4faef1b)
10- 1/14: Release version 0.4.0-rc1 (change#I22be12d8)
11- 7/14: Release version 0.4.1-rc1 (change#I5346984d2)
12- 1/15: Release version 0.4.2 (change#I32a22786f)
13- 3/17: Release version 0.4.3 (tag: v0.4.3)
14- 11/2: Release version 0.4.4 (tag: v0.4.4)
15- 1/12: Release version 0.5.0 (tag: v0.5.0)
16