M-librarian

--------------------------

* Fix inpx import: decode filenames to unicode.

--------------------------

* Import all \*.glst files (Flibusta fb2, LibRusEc fb2, non-fb2).

* Convert README.txt to README.rst.

* Import new (17 fields) INP.

--------------------------

* Web-interface: Search for authors, list books by an author,
download a book.

* Do not allow to run two instances of `ml-web.py` web-interfaces.
The second instance redirects browser to the first one and exits.

* Option `--download-to` provides the path to the download directory
in script `ml-search.py`.

---------------------------

* Display progress bar on updating counters.

* Inhibit progress bar if stdout is not terminal.

---------------------------

* Script ``ml-import.py`` displays progress bar.
Option ``-P`` prevents it.

---------------------------

* Use m_lib.defenc instead of m_lib; install it from PyPI.

* Use pytest, coverage and tox for testing.