Django-resized

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- Fix conversion issues when converting from formats with alpha channel(png,webp) to jpeg format 59
- Tests against django 5.1 60

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- Add an error check for crop with single size dimension 43
- Add an error check for webp conversion without quality set 45

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- Implement scale up and down support 42
- Add support to maintain image ratio 23

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- Remove official support for Django < 2.2 and python 2 (it may still works but is untested)
- Added support for Django up to 4.0
- Add support for mirrored orientations 29
- Fix JPEG default quality (fixes 34) 35
- Add 'png' to the formats that need the img mode to be RGBA 39 41
- Use Image.Resampling.LANCZOS instead of deprecated Image.ANTIALIAS

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- Check force_format exists before checking value