What's Changed
* added mypy to CI tests by tclose in https://github.com/ArcanaFramework/fileformats-datascience/pull/4
* Updated to use Binary|UnicodeFile types and validated_property by tclose in https://github.com/ArcanaFramework/fileformats-datascience/pull/5
**Full Changelog**: https://github.com/ArcanaFramework/fileformats-datascience/compare/v0.3.0...v0.3.1