load_image usage in represent

[serengil]

In represent function, where load_image is called, it is returning img object and img name but this is not covered here:

https://github.com/serengil/deepface/blob/master/deepface/DeepFace.py#L706

Also, region should be dict instead of list

https://github.com/serengil/deepface/blob/master/deepface/DeepFace.py#L721

[serengil]

Closed after PR - #863