### _Black_
+- Add primer support and test for code piped into black via STDIN (#2315)
+- Fix internal error when `FORCE_OPTIONAL_PARENTHESES` feature is enabled (#2332)
+- Accept empty stdin (#2346)
+
+## 21.6b0
+
+### _Black_
+
+- 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)
+- Fix regression where `R` prefixes would be lowercased for docstrings (#2285)
+- Fix handling of named escapes (`\N{...}`) when `--experimental-string-processing` is
+ used (#2319)
+
+### Integrations
+
+- The vim plugin now searches upwards from the directory containing the current buffer
+ instead of the current working directory for pyproject.toml. (#1871)
+
+### Integrations
+
+- The vim plugin now reads the correct string normalization option in pyproject.toml
+ (#1869)
+- The vim plugin no longer crashes Black when there's boolean values in pyproject.toml
+ (#1869)
## 21.5b2
- 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)
-- Fixed option usage when using the `--code` flag (#2259)
- 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 typos discovered by codespell (#2228)
- Fix Vim plugin installation instructions. (#2235)
- Add new Frequently Asked Questions page (#2247)
-- Removed safety checks warning for the `--code` option (#2259)
- Fix encoding + symlink issues preventing proper build on Windows (#2262)
## 21.5b1