replace resize implementation
remove thumbnail fallback
reflect changes in documentation
fix tests: use `im.transform` directly when result is compared
with other transform operations.
resize test rework
merge imaging and imaging core resize tests
this bug actually was in previous implementation too:
type switch default case was never achieved because special
images is in image8 pointers, not in image32
make im.stretch strong alias to im.resize.
mark im.stretch as deprecated.
fix comments
Merge commit 'e0b94d65bedb4a2124228aa579686a3ba2974d11' into replace-resize
rename Antialias and stretch to resample
Merge pull request #997 from homm/replace-resize

Replace resize method