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Changed
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* Restructuring project into a package.
* Introducing parameter ``db_path`` to script
* Changing ``README.rst`` to remove TODO-style phrasing.
* Removed version from ``swagger_config.json`` as it is already set dynamically by ``main.py``.
* Moved the ``requirements.txt`` out of the application folder and into the project folder.
* Obtaining API version from the package version.
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