Audmodel

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* Fixed: :func:`audmodel.versions` where not using the correct lookup table name
and was broken

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* Added: :class:`audmodel.Parameter` and :class:`audmodel.Parameters`
* Changed: ``unittest-public-local`` repository for unit testing
* Changed: replace ``Lookup`` class with :class:`audfactory.Lookup`
* Removed: remove ``aumodel.interface`` module
* Removed: dependencies to ``audiofile``, ``audsp``, ``numpy``, ``pandas``

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* Added: :class:`audmodel.interface.ProcessWithContext`
* Changed: :meth:`audmodel.load` prints more informative error message

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* Fixed: :meth:`audmodel.interface.Process.process_signal` uses correct
sampling rate after resampling

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* Added: :class:`audmodel.interface.Segment`
* Added: :meth:`audmodel.get_model_url`
* Changed: renamed interface class `Generic` to :class:`audmodel.interface.Process`
* Changed: :meth:`audmodel.publish` returns the model's uid instead of url

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* Added: :meth:`audmodel.extend_params` and :meth:`audmodel.get_params`
* Fixed: return type of :meth:`audmodel.interface.Generic.read_audio`