Mypy type compliance

[charlesriver456]

Currently when using this package (for example the InPlace class), when linting with mypy a missing library stubs or py.typed marker error is raised. Would you consider adding stub files to make this package mypy compatible?

To reproduce, create a small file using inplace:

import in_place

with in_place.InPlace('example.txt') as example_file:
    for line in example_file:
        example_file.write(line)

Run mypy file_name.py.

[jwodder]

in_place v1.0.0 is now out with type annotations.

[charlesriver456]

Thank you!