+- Fix failure caused by `fmt: skip` and indentation (#2281)
+- Account for += assignment when deciding whether to split string (#2312)
+- Correct max string length calculation when there are string operators (#2292)
+- Fixed option usage when using the `--code` flag (#2259)
+- Do not call `uvloop.install()` when _Black_ is used as a library (#2303)
+- Added `--required-version` option to require a specific version to be running (#2300)
+- Fix incorrect custom breakpoint indices when string group contains fake f-strings
+ (#2311)
+
+## 21.5b2
+
+### _Black_
+
+- A space is no longer inserted into empty docstrings (#2249)
+- Fix handling of .gitignore files containing non-ASCII characters on Windows (#2229)
+- Respect `.gitignore` files in all levels, not only `root/.gitignore` file (apply
+ `.gitignore` rules like `git` does) (#2225)
+- Restored compatibility with Click 8.0 on Python 3.6 when LANG=C used (#2227)
+- Add extra uvloop install + import support if in python env (#2258)
+- Fix --experimental-string-processing crash when matching parens are not found (#2283)
+- Make sure to split lines that start with a string operator (#2286)
+- Fix regular expression that black uses to identify f-expressions (#2287)
+
+### _Blackd_
+
+- Add a lower bound for the `aiohttp-cors` dependency. Only 0.4.0 or higher is
+ supported. (#2231)
+
+### Integrations
+
+- The official Black action now supports choosing what version to use, and supports the
+ major 3 OSes. (#1940)
+
+### Packaging
+
+- Release self-contained x86_64 MacOS binaries as part of the GitHub release pipeline
+ (#2198)
+- Always build binaries with the latest available Python (#2260)
+
+### Documentation
+
+- Add discussion of magic comments to FAQ page (#2272)
+- `--experimental-string-processing` will be enabled by default in the future (#2273)
+- Fix typos discovered by codespell (#2228)
+- Fix Vim plugin installation instructions. (#2235)
+- Add new Frequently Asked Questions page (#2247)
+- Fix encoding + symlink issues preventing proper build on Windows (#2262)
+
+## 21.5b1
+
+### _Black_
+
+- Refactor `src/black/__init__.py` into many files (#2206)
+
+### Documentation
+
+- Replaced all remaining references to the
+ [`master`](https://github.com/psf/black/tree/main) branch with the
+ [`main`](https://github.com/psf/black/tree/main) branch. Some additional changes in
+ the source code were also made. (#2210)
+- Sigificantly reorganized the documentation to make much more sense. Check them out by
+ heading over to [the stable docs on RTD](https://black.readthedocs.io/en/stable/).
+ (#2174)
+
+## 21.5b0
+
+### _Black_
+
+- Set `--pyi` mode if `--stdin-filename` ends in `.pyi` (#2169)
+- Stop detecting target version as Python 3.9+ with pre-PEP-614 decorators that are
+ being called but with no arguments (#2182)
+
+### _Black-Primer_
+
+- Add `--no-diff` to black-primer to suppress formatting changes (#2187)
+
+## 21.4b2
+
+### _Black_
+
+- Fix crash if the user configuration directory is inaccessible. (#2158)
+
+- Clarify
+ [circumstances](https://github.com/psf/black/blob/master/docs/the_black_code_style.md#pragmatism)
+ in which _Black_ may change the AST (#2159)
+
+- Allow `.gitignore` rules to be overridden by specifying `exclude` in `pyproject.toml`
+ or on the command line. (#2170)
+
+### _Packaging_
+
+- Install `primer.json` (used by `black-primer` by default) with black. (#2154)
+
+## 21.4b1
+
+### _Black_
+
+- Fix crash on docstrings ending with "\\ ". (#2142)