Pyink

* Existing parentheses around strings are no longer removed if the content does
not fit on a single line. This is related to
https://github.com/psf/black/pull/3640 where we still want to keep the
parentheses around the implicitly concatenated strings if the code already
uses them, making it more obvious it's a single function argument.
* `--pyink-lines=` now works with stdin inputs (16).
* Fixed compatibility issue on Python 3.7 (13).

* In multiline module docstrings, trailing quotes that are put on their own line
are now kept on their own line. (8)

This release is based on _Black_ v23.3.0.

* _Pyink_ now requires _Black_ v23.3.0 (for blib2to3).

This release is based on https://github.com/psf/black/commit/9c8464ca7ddd48d1c19112d895ae12d783f01563.

* Fixed a bug where a module docstring ends with a line that's `LineLength-3`
to `LineLength` long, an extra empty line was added.
* Fixed a bug when running *Pyink* on Python 3.8 and earlier (3).
* Do not explode immediately nested literals that have a trailing comma in the
body.

This release is based on _Black_ v23.1.0.

* Temporarily disabled the following _Black_ future style changes:
* https://github.com/psf/black/pull/2916
* https://github.com/psf/black/pull/2278
* Fixed a bug in incremental formatting (`--pyink_lines=`) where pairs of
` fmt: off/on` are used outside of the line ranges.
* Fixed a bug in incremental formatting (`--pyink_lines=`) when part of the
match statement is changed.

This release is based on
https://github.com/psf/black/commit/96e62c57e3023977de177a8ba34678007a63f1fe
(two bugfix commits ahead of _Black_ v22.12.0).

* Prefer splitting right hand side of assignment statements
(see [psf/black1498](https://github.com/psf/black/issues/1498), this is being
upstreamed in [psf/black/pull/3368](https://github.com/psf/black/pull/3368)).