Django-dmarc

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Improve mimepart debug message

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Add application/gzip

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* Bump version to 0.3.0
* Add gzip handling
* Refactor to use argparse
* Refactor code

Note change to arguments requiring email or xml
and either can be - for stdin

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* Bump version to 0.2.2
* Remove dependency on django.conf.urls.patterns

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* Bump minimum Django version to 1.8
* Improve processing descriptions

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Add error checking and saving for bad zipfile