Ben Bariteau

Add type annotations?

3

[Type annotations](https://docs.python.org/3/library/typing.html) are a useful feature for consumers of any library, so it would be nice if this library had it as well.

Add ability to set verbosity level through environment variable

3

- [x] I have searched the [issues](https://github.com/python-poetry/poetry/issues) of this repo and believe that this is not a duplicate. - [x] I have searched the [FAQ](https://python-poetry.org/docs/faq/) and general [documentation](https://python-poetry.org/docs/) and believe...