wrong url when using maxSize transformation

hi, it's me again :)

i use maxSize transformation for profile pictures, the php looks like this
````
$this->imbo->getImageUrl($imageId)->maxSize($width, $height);
````

but in the resulting url the transform is listed twice. 

domain/users/golf/images/imageId?t[0]=maxSize:width=150,height=150&t[1][0]=maxSize:width=150,height=150&accessToken=accessToken

when fetched i get Invalid transformation error. when i delete the part after &t[1][0] i get incorrect token error, which is not true as without the transformation the image displays

it's doing that on both master and develop branch. i've also updated the server part, but it still persists