I managed to release the new version of MAT in 2015!
Under the hood, some major changes happened: - Thanks to Rafiot, MAT is now using Travis-CI to run its testsuite on each commit. This brings shiny things like code coverage or automatic static analysis. - MAT is no longer relying on hachoir to parse files. MAT started (roughly) as an interface to hachoir in 2011, but now, it's time to move on: this library is not documented, has a lot of spaghetti code, isn't python3-compatible, … MAT is now using its own parsers for some files, mutagen for audio, exiftool for images, Cairo, Poppler and python-pdfrw (because Poppler won't let MAT manipulate metadata, but can't help himself to add some!). The code is now simpler and easier to understand. - Torrent files are now cleaned in a recursive manner: super-tricky-crafted torrent files won't be able to survive MAT with compromising non-standard fields.
By the way, if you know how to draw, I'm looking for a new logo, because I'm not entirely happy with the current one.