FiftyThree has released a major update to its popular Paper idea capture app, adding support for iPhone users along with a number of interesting user interface improvements. Version 3.0 allows iPhone users to capture images, notes, and sketches at the tap of a button and provides a new home view to make it easier to see everything at a glance. Text in notes can now be quickly styled by swiping to create headers, checklists, and bullet points, or rearrange…