Unnecessary since dropping Python 2 support.

This makes one test case from test_str_to_display a duplicate and so has
been removed.

Replace typing.Text with str

Using typing.Text is unnecessary since dropping Python 2 support.

In Python 3, typing.Text is a simple alias of str. It exists as a
backward compatibility shim for Python 2.

Remove __future__ imports

Unnecessary since dropping Python 2.

Remove obsolete "# type: ignore" comments

Obsolete since dropping Python 2 support.

Add the mypy setting "warn_unused_ignores = True" to catch these
earlier.

Remove redundant Python 2.7 code

Improve local pre-commit experience

Co-authored-by: NJon Dufresne <jon.dufresne@gmail.com>

Drop support for Python 2.7 and Python 3.5

Update isort URL: timothycrosley/isort → PyCQA/isort

These versions are no longer supported.

I am really happy to make this nice and short.

Add `--ignore-requires-python` support to pip download.

Skip pip search tests unless explicitly requested