release 0.0.5.
README fix .
allow passing options to Model#image that are passed on to the Attachment.

model.image(file, path: "/") do .. end.
fix tests as minitest 5.4 is buggy and doesn't evaluate all its.
Metadata < Hash as i don't see the point of re-writing all the functionality.
make Metadata#to_hash return plain hash, not Metadata.
add test to assert we can alter metadata in task.
releasing 0.0.6.