Here's a heads up to all you BlobBuilder fans, it's going bye bye! BlobBuilder is a handy API for creating Blobs (or Files) in JavaScript. It's been around since Chrome 8, FF 6, and IE 10 but has never shipped in Safari, and likely never will. Recent spec changes to the File API include a new constructor for Blob, which essentially makes BlobBuilder irrelevant. In fact, Safari nightlies have alrea