Feature request: scale images keeping aspect ratio

[julesbl]

Something that needs doing a lot is scaling images without changing their aspect ratio. So doing something like resizeFixedAspect(Box(200, 150)) and the supplied image gets resized to a maximum height or 150px or maximum width of 200px but keeps its aspect ratio.

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What's the PHP version you are using?

output of php -v

What's the imaging library you are using [gd/imagick/gmagick/any]?

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What's the imaging library configuration

For example, for imagick, output of php --ri imagick

Minimal PHP code to reproduce the error:

// Please write the PHP code that shows the issue
// Use only code of the Imagine library (no 3rd party PHP libraries)
// If you load an image, please provide it too so that we can replicate your issue

[mlocati]

This can already be done with the thumbnail method, using the THUMBNAIL_INSET flag