Expected behavior

Builder exists and works for argument : keepAspectRatio
(feature is precious because round on reduction will have a few pixel difference with requested size)
Example : expecting 500x1000px and got 499x1000px

Actual behavior

keepAspectRatio arg is not mentioned in examples

##Suggestion of example
Thumbnails.of(dir_in.listFiles()).size(width, height).keepAspectRati

Sometimes i upload .svg images into media library, for example for logo. Using:
{{ record.logo|media|resize(false,43) }}
i get the link to non existing image - 'thumb__0_43_0_0_auto.svg'.
SVG's should be ingored when resizing, is there an option for this in settings - don't see anything in documentation

After clicking save button we do not need to settings screen anymore and it becomes little confusing to stay that screen without any close button.

I can change the behavior and open a pull request by the way.