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* Added **Biblioteca Italiana (bibit)** reader
* Added Archivio Metrico Italiano info to Biblioteca Italiana reader
* Reduced fixtures file size
* Adding a tmp file to git ignore
* Adding languages and some other cosmetic changes
* Fixing an error with the expected output of the ``averell list`` command
* Adding slugs, langs, and 'all' to ``download`` and ``export``
* Fixing coverage
* Adding documentation and fixing a test