Replace TYPE_OBJECT with TYPE_IMAGE_DATA -- identical between node/browser, and only used in isImageData
Replace TYPE_OBJECT with TYPE_IMAGE_DATA -- identical between node/browser, and only used in isImageData

cburgmer/js-imagediff,cburgmer/js-imagediff,archiveds/js-imagediff,HumbleSoftware/js-imagediff,archiveds/js-imagediff