Updated all of the dependencies.
More features are coming soon, I promise! Thanks for all of your patience.

Now with py.typed, for all your typing needs.

• Various dependency updates
• Removes boto3-stubs/mypy stubs for CloudFormation in the runtime requirements

Fixes an issue introduced in 0.0.6, where deploys would fail if no parameters or tags were supplied.

Long overdue for a release - sorry!

This is mostly an administrative bump, but adds:

• Better error handling
• Many dependency updates
• Docker published using python 3.9