Vws-python

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* Breaking change: the ``vws.exceptions.custom_exceptions.ActiveMatchingTargetsDeleteProcessing`` exception has been removed as Vuforia no longer returns this error.

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* Support file-like objects in every method which accepts a file.

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* Breaking change: The ``vws.exceptions.cloud_reco_exceptions.MatchProcessing`` is now ``vws.exceptions.custom_exceptions.ActiveMatchingTargetsDeleteProcessing``.
* Added new exception ``vws.exceptions.custom_exceptions.RequestEntityTooLarge``.
* Add better exception handling when querying a server which does not serve the Vuforia API.