Allow providing Gravity object directly (#8)

Allow >1 gravity coordinates per imgproxy docs (#7)

Added __set_state for options (#6)

Always build encoded url with a file extension if it is passed explic…

…itly. (#5)

Merge pull request #3 from onliner/update-to-3x

Support new processing options for ImgProxy 3

Update ImageFormat.php (#2)

Аdd jpeg support

Update composer.json