Pytest-cratedb

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- Modernized package
- Renamed package to ``pytest-cratedb``
- Published maintenance release

=================

- Replace ``print`` statements with ``logging.debug`` statements so that
retrieving the fixture does not produce output that is captured in doctests.
This may break existing usages of the fixture in doctests in case the output
of the ``getfixture`` method was matched.

=================

- Allow additional CrateDB settings in the ``crate_layer`` factory fixture
which are applied on node start.

- Expose addresses of started CrateDB nodes

=================

- Initial pytest plugin