**BEFORE YOU START**: please make sure your pull request is against the `dev` branch. 
We cannot accept pull requests against the `main` branch. 
See our [contributing guide](https://github.com/stanfordnlp/stanza/blob/main/CONTRIBUTING.md) for details.

## Description
A brief and concise description of what your pull request is trying to accomplish.

## Fixes Issues
A list of issues/bugs with # references. (e.g., #123)

## Unit test coverage
Are there unit tests in place to make sure your code is functioning correctly?
(see [here](https://github.com/stanfordnlp/stanza/blob/master/tests/test_tagger.py) for a simple example)

## Known breaking changes/behaviors
Does this break anything in Stanza's existing user interface? If so, what is it and how is it addressed?