Fixes #1212 allow Pillow 6.1.0
Fixes #1212 allow Pillow 6.1.0

scorphus/thumbor,thumbor/thumbor,scorphus/thumbor,kkopachev/thumbor,thumbor/thumbor,kkopachev/thumbor,thumbor/thumbor,gi11es/thumbor,thumbor/thumbor,kkopachev/thumbor,gi11es/thumbor,scorphus/thumbor,kkopachev/thumbor,gi11es/thumbor,scorphus/thumbor