XML Serialization Support

[stephen-bunn]

Expected Behavior

Configs should also be able to dump and load to and from XML.

Current Behavior

There should be an XMLHandler added which provides the dynamic functions dump(s)_xml and load(s)_xml to a config instance.

Possible Solution

There several libraries which go from dict to xml...

• dict2xml
• dicttoxml
• xmltodict

But from what I can tell, they are poorly implemented and not reflective.

TODO:

• Add functionality for dict -> xml -> dict serialization
• Add documentation to docs/source/handlers.rst
• Add news about xml support

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❤️ Thank you!