Is your feature request related to a problem? Please describe.
When developing with this library, I constantly have to type hint variables returned by the functions, so my autocompleter suggests the right properties and for cleaner code.

Describe the solution you'd like
It would be great if you could type hint the library or at least the public API in order to help type checkers, autocompleters and collaboration.

Describe alternatives you've considered
None

Additional context
None