White lines on image boundary in the case of some operations

[puhoshville]

Also, there is an issue with white lines and I don't know how can I fix it:

Originally posted by @puhoshville in #189 (comment)

@mdbloice noted that antialiasing can be useful

[puhoshville]

There is actually no white lines issue for rotate_without_crop method. What do we see in the image from the description - white lines are part of images! Images from examples simply contain white borders!
You can look at these images:

1. original

2. rotated with a black outer part

3. rotated with a non-black ground