bump version

bump version

add GraphCutSeamFinder (#43)

* add GraphCutSeamFinder

* bump version

bump version

bump version

Improve command line interface (#9)

closes #2 #3 #4 

* remove python 2 compability

* install CLI in user data path

* made preview optional

* store_true, store_false for boolean inputs

* removed dublicated 'dest' parameters

* bump version

* Update README.md