fix: mypy will now type hint the package correctly

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (a483245) to head (6a77dc6).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #9 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 2 2 Lines 583 577 -6 Branches 32 37 +5 ========================================= - Hits 583 577 -6 ``` | [Flag](https://app.codecov.io/gh/bharel/asynciolimiter/pull/9/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Bar+Harel) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/bharel/asynciolimiter/pull/9/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Bar+Harel) | `100.00% <100.00%> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Bar+Harel#carryforward-flags-in-the-pull-request-comment) to find out more.

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