infer file format from filename when saving BREAKING CHANGE: not specifying a file format will throw instead of saving to png
infer file format from filename when saving
BREAKING CHANGE: not specifying a file format will throw instead of saving to png

image-js/ij,image-js/ij,image-js/ij,image-js/core,image-js/core,image-js/image-js,image-js/image-js