Evaluate the relevance of mat2 wrt. the USA Library of Congress most used formats

There is a really nice paper (local mirror) about the most used fileformats at the USA's Library of Congress. We should take a look at it, and implement formats used there but not supported by mat2.

It boils down to:

• jp2
• tif
• jpg
• xml - we can't really support it
• pdf
• txt
• gif
• gz
• i41
• mxf
• mpg
• wav
• mov
• iso
  • https://github.com/clalancette/pycdlib
• dv
• gz
• zip
• rar - python's library to handle this format, rarfile, doesn't provide enough control to remove all the metadata.
• tar