feat: add vips rotate #38
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Reference images diffs: - plasma-rotated-90 - MAE (Mean Average Error): 0.00802462 - plasma-rotated-180 - MAE: 0.0080234 - plasma-rotated-270 - MAE: 0.00750394
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Background
GdkPixbuf-based image processing can take over 1GB of memory for processing a single high-resolution photo. We've decided to introduce another processor, hoping that it'll improve Morandi's memory profile and performance.
Problems
Vips processor doesn't support rotation
Solution
Add support for rotation
Pixbuf vs Vips comparison
0.0080234Other images can be compared by opening files with identical names in
spec/fixtures/reference_images/andspec/fixtures/reference_images/vips/