Remy Chaput

Add testing cases (with a framework such as Unittest). Such tests need to be reproducible on each computer (which is a bit complicated, considering that xdg-prefs changes the user's preferences)

This would allow to: - check if a given application really exists (and thus to filter the list of 'default applications' for each Media Type) - determine which Media Types...

It would be interesting to change the default program of multiples Media Types at the same time (for example, setting all 'image/...' to be opened by eog). This should not...

Documentation should be added in a `docs/` folder at the root of the project. It should contain: - the code documentation (extracted from the Python docstrings) - a "user manual"...