[shared4you]

The README says:

     we recommend using version (Python) 3.2 or higher

It requires Python >= 3.2. It didn't run on my Ubuntu machine which has default 2.7

And it doesn't support tables or code syntax highlighting. [Of course, I know they aren't part of the original Markdown].

[lvillani]

Ubuntu 12.04 ships with Python 3.2.3, IIRC the 'python3' executable is installed by default (even though the default installation may lack some third party modules).

[git-pull]

Python 3.x can be made into a dependency in the .deb.