v0.1.9

Version 0.1.9

Changes (not complete probably, I'm bad at this):

• Update Filing object to be more useful
• Check Indices object has a df (fixes #8)
• Update default User Agent in config file to not have example.com email, which may have broken things (mentioned in #8)
• Add Github Action to hopefully push this automatically to PyPI. 20$ says it doesn't work.

Full Changelog: v0.1.6...v0.1.9