-## Change Log
-
-### Unreleased
-
-#### _Black_
-
-- `Black` now respects `--skip-string-normalization` when normalizing multiline
- docstring quotes (#1637)
-
-- `Black` no longer removes all empty lines between non-function code and decorators
- when formatting typing stubs. Now `Black` enforces a single empty line. (#1646)
-
-- `Black` no longer adds an incorrect space after a parenthesized assignment expression
- in if/while statements (#1655)
-
-- fixed a crash when PWD=/ on POSIX (#1631)
-
-- fixed "I/O operation on closed file" when using --diff (#1664)
-
-- Prevent coloured diff output being interleaved with multiple files (#1673)
-
-- Added support for PEP 614 relaxed decorator syntax on python 3.9 (#1711)
-
-- Added parsing support for unparenthesized tuples and yield expressions in annotated
- assignments (#1835)
-
-- use lowercase hex strings (#1692)
-
-- added `--extend-exclude` argument (#1571)
-
-#### _Packaging_
-
-- Self-contained native _Black_ binaries are now provided for releases via GitHub
- Releases (#1743)
-
-### 20.8b1
-
-#### _Packaging_
-
-- explicitly depend on Click 7.1.2 or newer as `Black` no longer works with versions
- older than 7.0
-
-### 20.8b0
-
-#### _Black_
-
-- re-implemented support for explicit trailing commas: now it works consistently within
- any bracket pair, including nested structures (#1288 and duplicates)
-
-- `Black` now reindents docstrings when reindenting code around it (#1053)
-
-- `Black` now shows colored diffs (#1266)
-
-- `Black` is now packaged using 'py3' tagged wheels (#1388)
-
-- `Black` now supports Python 3.8 code, e.g. star expressions in return statements
- (#1121)
-
-- `Black` no longer normalizes capital R-string prefixes as those have a
- community-accepted meaning (#1244)
-
-- `Black` now uses exit code 2 when specified configuration file doesn't exit (#1361)
-
-- `Black` now works on AWS Lambda (#1141)
-
-- added `--force-exclude` argument (#1032)
-
-- removed deprecated `--py36` option (#1236)
-
-- fixed `--diff` output when EOF is encountered (#526)
-
-- fixed `# fmt: off` handling around decorators (#560)
-
-- fixed unstable formatting with some `# type: ignore` comments (#1113)
-
-- fixed invalid removal on organizing brackets followed by indexing (#1575)
-
-- introduced `black-primer`, a CI tool that allows us to run regression tests against
- existing open source users of Black (#1402)
-
-- introduced property-based fuzzing to our test suite based on Hypothesis and
- Hypothersmith (#1566)
-
-- implemented experimental and disabled by default long string rewrapping (#1132),
- hidden under a `--experimental-string-processing` flag while it's being worked on;
- this is an undocumented and unsupported feature, you lose Internet points for
- depending on it (#1609)
-
-#### Vim plugin
-
-- prefer virtualenv packages over global packages (#1383)
-
-### 19.10b0
-
-- added support for PEP 572 assignment expressions (#711)
-
-- added support for PEP 570 positional-only arguments (#943)
-
-- added support for async generators (#593)
-
-- added support for pre-splitting collections by putting an explicit trailing comma
- inside (#826)
-
-- added `black -c` as a way to format code passed from the command line (#761)
-
-- --safe now works with Python 2 code (#840)
-
-- fixed grammar selection for Python 2-specific code (#765)
-
-- fixed feature detection for trailing commas in function definitions and call sites
- (#763)
-
-- `# fmt: off`/`# fmt: on` comment pairs placed multiple times within the same block of
- code now behave correctly (#1005)
-
-- _Black_ no longer crashes on Windows machines with more than 61 cores (#838)
-
-- _Black_ no longer crashes on standalone comments prepended with a backslash (#767)
-
-- _Black_ no longer crashes on `from` ... `import` blocks with comments (#829)
-
-- _Black_ no longer crashes on Python 3.7 on some platform configurations (#494)
-
-- _Black_ no longer fails on comments in from-imports (#671)
-
-- _Black_ no longer fails when the file starts with a backslash (#922)
-
-- _Black_ no longer merges regular comments with type comments (#1027)
-
-- _Black_ no longer splits long lines that contain type comments (#997)
-
-- removed unnecessary parentheses around `yield` expressions (#834)
-
-- added parentheses around long tuples in unpacking assignments (#832)
-
-- added parentheses around complex powers when they are prefixed by a unary operator
- (#646)
-
-- fixed bug that led _Black_ format some code with a line length target of 1 (#762)
-
-- _Black_ no longer introduces quotes in f-string subexpressions on string boundaries
- (#863)
-
-- if _Black_ puts parenthesis around a single expression, it moves comments to the
- wrapped expression instead of after the brackets (#872)
-
-- `blackd` now returns the version of _Black_ in the response headers (#1013)
-
-- `blackd` can now output the diff of formats on source code when the `X-Diff` header is
- provided (#969)
-
-### 19.3b0
-
-- new option `--target-version` to control which Python versions _Black_-formatted code
- should target (#618)
-
-- deprecated `--py36` (use `--target-version=py36` instead) (#724)
-
-- _Black_ no longer normalizes numeric literals to include `_` separators (#696)
-
-- long `del` statements are now split into multiple lines (#698)
-
-- type comments are no longer mangled in function signatures
-
-- improved performance of formatting deeply nested data structures (#509)
-
-- _Black_ now properly formats multiple files in parallel on Windows (#632)
-
-- _Black_ now creates cache files atomically which allows it to be used in parallel
- pipelines (like `xargs -P8`) (#673)
-
-- _Black_ now correctly indents comments in files that were previously formatted with
- tabs (#262)
-
-- `blackd` now supports CORS (#622)
-
-### 18.9b0
-
-- numeric literals are now formatted by _Black_ (#452, #461, #464, #469):
-
- - numeric literals are normalized to include `_` separators on Python 3.6+ code
-
- - added `--skip-numeric-underscore-normalization` to disable the above behavior and
- leave numeric underscores as they were in the input
-
- - code with `_` in numeric literals is recognized as Python 3.6+
-
- - most letters in numeric literals are lowercased (e.g., in `1e10`, `0x01`)
-
- - hexadecimal digits are always uppercased (e.g. `0xBADC0DE`)
-
-- added `blackd`, see [its documentation](#blackd) for more info (#349)
-
-- adjacent string literals are now correctly split into multiple lines (#463)
-
-- trailing comma is now added to single imports that don't fit on a line (#250)
-
-- cache is now populated when `--check` is successful for a file which speeds up
- consecutive checks of properly formatted unmodified files (#448)
-
-- whitespace at the beginning of the file is now removed (#399)
-
-- fixed mangling [pweave](http://mpastell.com/pweave/) and
- [Spyder IDE](https://www.spyder-ide.org/) special comments (#532)
-
-- fixed unstable formatting when unpacking big tuples (#267)
-
-- fixed parsing of `__future__` imports with renames (#389)
-
-- fixed scope of `# fmt: off` when directly preceding `yield` and other nodes (#385)
-
-- fixed formatting of lambda expressions with default arguments (#468)
-
-- fixed `async for` statements: _Black_ no longer breaks them into separate lines (#372)
-
-- note: the Vim plugin stopped registering `,=` as a default chord as it turned out to
- be a bad idea (#415)
-
-### 18.6b4
-
-- hotfix: don't freeze when multiple comments directly precede `# fmt: off` (#371)
-
-### 18.6b3
-
-- typing stub files (`.pyi`) now have blank lines added after constants (#340)
-
-- `# fmt: off` and `# fmt: on` are now much more dependable:
-
- - they now work also within bracket pairs (#329)
-
- - they now correctly work across function/class boundaries (#335)
-
- - they now work when an indentation block starts with empty lines or misaligned
- comments (#334)
-
-- made Click not fail on invalid environments; note that Click is right but the
- likelihood we'll need to access non-ASCII file paths when dealing with Python source
- code is low (#277)
-
-- fixed improper formatting of f-strings with quotes inside interpolated expressions
- (#322)
-
-- fixed unnecessary slowdown when long list literals where found in a file
-
-- fixed unnecessary slowdown on AST nodes with very many siblings
-
-- fixed cannibalizing backslashes during string normalization
-
-- fixed a crash due to symbolic links pointing outside of the project directory (#338)
-
-### 18.6b2
-
-- added `--config` (#65)
-
-- added `-h` equivalent to `--help` (#316)
-
-- fixed improper unmodified file caching when `-S` was used
-
-- fixed extra space in string unpacking (#305)
-
-- fixed formatting of empty triple quoted strings (#313)
-
-- fixed unnecessary slowdown in comment placement calculation on lines without comments
-
-### 18.6b1
-
-- hotfix: don't output human-facing information on stdout (#299)
-
-- hotfix: don't output cake emoji on non-zero return code (#300)
-
-### 18.6b0
-
-- added `--include` and `--exclude` (#270)
-
-- added `--skip-string-normalization` (#118)
-
-- added `--verbose` (#283)
-
-- the header output in `--diff` now actually conforms to the unified diff spec
-
-- fixed long trivial assignments being wrapped in unnecessary parentheses (#273)
-
-- fixed unnecessary parentheses when a line contained multiline strings (#232)
-
-- fixed stdin handling not working correctly if an old version of Click was used (#276)
-
-- _Black_ now preserves line endings when formatting a file in place (#258)
-
-### 18.5b1
-
-- added `--pyi` (#249)
-
-- added `--py36` (#249)
-
-- Python grammar pickle caches are stored with the formatting caches, making _Black_
- work in environments where site-packages is not user-writable (#192)
-
-- _Black_ now enforces a PEP 257 empty line after a class-level docstring (and/or
- fields) and the first method
-
-- fixed invalid code produced when standalone comments were present in a trailer that
- was omitted from line splitting on a large expression (#237)
-
-- fixed optional parentheses being removed within `# fmt: off` sections (#224)
-
-- fixed invalid code produced when stars in very long imports were incorrectly wrapped
- in optional parentheses (#234)
-
-- fixed unstable formatting when inline comments were moved around in a trailer that was
- omitted from line splitting on a large expression (#238)
-
-- fixed extra empty line between a class declaration and the first method if no class
- docstring or fields are present (#219)
-
-- fixed extra empty line between a function signature and an inner function or inner
- class (#196)
-
-### 18.5b0
-
-- call chains are now formatted according to the
- [fluent interfaces](https://en.wikipedia.org/wiki/Fluent_interface) style (#67)
-
-- data structure literals (tuples, lists, dictionaries, and sets) are now also always
- exploded like imports when they don't fit in a single line (#152)
-
-- slices are now formatted according to PEP 8 (#178)
-
-- parentheses are now also managed automatically on the right-hand side of assignments
- and return statements (#140)
-
-- math operators now use their respective priorities for delimiting multiline
- expressions (#148)
-
-- optional parentheses are now omitted on expressions that start or end with a bracket
- and only contain a single operator (#177)
-
-- empty parentheses in a class definition are now removed (#145, #180)
-
-- string prefixes are now standardized to lowercase and `u` is removed on Python 3.6+
- only code and Python 2.7+ code with the `unicode_literals` future import (#188, #198,
- #199)
-
-- typing stub files (`.pyi`) are now formatted in a style that is consistent with PEP
- 484 (#207, #210)
-
-- progress when reformatting many files is now reported incrementally
-
-- fixed trailers (content with brackets) being unnecessarily exploded into their own
- lines after a dedented closing bracket (#119)
-
-- fixed an invalid trailing comma sometimes left in imports (#185)
-
-- fixed non-deterministic formatting when multiple pairs of removable parentheses were
- used (#183)
-
-- fixed multiline strings being unnecessarily wrapped in optional parentheses in long
- assignments (#215)
-
-- fixed not splitting long from-imports with only a single name
-
-- fixed Python 3.6+ file discovery by also looking at function calls with unpacking.
- This fixed non-deterministic formatting if trailing commas where used both in function
- signatures with stars and function calls with stars but the former would be
- reformatted to a single line.
-
-- fixed crash on dealing with optional parentheses (#193)
-
-- fixed "is", "is not", "in", and "not in" not considered operators for splitting
- purposes
-
-- fixed crash when dead symlinks where encountered
-
-### 18.4a4
-
-- don't populate the cache on `--check` (#175)
-
-### 18.4a3
-
-- added a "cache"; files already reformatted that haven't changed on disk won't be
- reformatted again (#109)
-
-- `--check` and `--diff` are no longer mutually exclusive (#149)
-
-- generalized star expression handling, including double stars; this fixes
- multiplication making expressions "unsafe" for trailing commas (#132)
-
-- _Black_ no longer enforces putting empty lines behind control flow statements (#90)
-
-- _Black_ now splits imports like "Mode 3 + trailing comma" of isort (#127)
-
-- fixed comment indentation when a standalone comment closes a block (#16, #32)
-
-- fixed standalone comments receiving extra empty lines if immediately preceding a
- class, def, or decorator (#56, #154)
-
-- fixed `--diff` not showing entire path (#130)
-
-- fixed parsing of complex expressions after star and double stars in function calls
- (#2)
-
-- fixed invalid splitting on comma in lambda arguments (#133)
-
-- fixed missing splits of ternary expressions (#141)
-
-### 18.4a2
-
-- fixed parsing of unaligned standalone comments (#99, #112)
-
-- fixed placement of dictionary unpacking inside dictionary literals (#111)
-
-- Vim plugin now works on Windows, too
-
-- fixed unstable formatting when encountering unnecessarily escaped quotes in a string
- (#120)
-
-### 18.4a1
-
-- added `--quiet` (#78)
-
-- added automatic parentheses management (#4)
-
-- added [pre-commit](https://pre-commit.com) integration (#103, #104)
-
-- fixed reporting on `--check` with multiple files (#101, #102)
-
-- fixed removing backslash escapes from raw strings (#100, #105)
-
-### 18.4a0
-
-- added `--diff` (#87)
-
-- add line breaks before all delimiters, except in cases like commas, to better comply
- with PEP 8 (#73)
-
-- standardize string literals to use double quotes (almost) everywhere (#75)
-
-- fixed handling of standalone comments within nested bracketed expressions; _Black_
- will no longer produce super long lines or put all standalone comments at the end of
- the expression (#22)
-
-- fixed 18.3a4 regression: don't crash and burn on empty lines with trailing whitespace
- (#80)
-
-- fixed 18.3a4 regression: `# yapf: disable` usage as trailing comment would cause
- _Black_ to not emit the rest of the file (#95)
-
-- when CTRL+C is pressed while formatting many files, _Black_ no longer freaks out with
- a flurry of asyncio-related exceptions
-
-- only allow up to two empty lines on module level and only single empty lines within
- functions (#74)
-
-### 18.3a4
-
-- `# fmt: off` and `# fmt: on` are implemented (#5)
-
-- automatic detection of deprecated Python 2 forms of print statements and exec
- statements in the formatted file (#49)
-
-- use proper spaces for complex expressions in default values of typed function
- arguments (#60)
-
-- only return exit code 1 when --check is used (#50)
-
-- don't remove single trailing commas from square bracket indexing (#59)
-
-- don't omit whitespace if the previous factor leaf wasn't a math operator (#55)
-
-- omit extra space in kwarg unpacking if it's the first argument (#46)
-
-- omit extra space in
- [Sphinx auto-attribute comments](http://www.sphinx-doc.org/en/stable/ext/autodoc.html#directive-autoattribute)
- (#68)
-
-### 18.3a3
-
-- don't remove single empty lines outside of bracketed expressions (#19)
-
-- added ability to pipe formatting from stdin to stdin (#25)
-
-- restored ability to format code with legacy usage of `async` as a name (#20, #42)
-
-- even better handling of numpy-style array indexing (#33, again)
-
-### 18.3a2
-
-- changed positioning of binary operators to occur at beginning of lines instead of at
- the end, following
- [a recent change to PEP 8](https://github.com/python/peps/commit/c59c4376ad233a62ca4b3a6060c81368bd21e85b)
- (#21)
-
-- ignore empty bracket pairs while splitting. This avoids very weirdly looking
- formattings (#34, #35)
-
-- remove a trailing comma if there is a single argument to a call
-
-- if top level functions were separated by a comment, don't put four empty lines after
- the upper function
-
-- fixed unstable formatting of newlines with imports
-
-- fixed unintentional folding of post scriptum standalone comments into last statement
- if it was a simple statement (#18, #28)
-
-- fixed missing space in numpy-style array indexing (#33)
-
-- fixed spurious space after star-based unary expressions (#31)
-
-### 18.3a1
-
-- added `--check`
-
-- only put trailing commas in function signatures and calls if it's safe to do so. If
- the file is Python 3.6+ it's always safe, otherwise only safe if there are no `*args`
- or `**kwargs` used in the signature or call. (#8)
-
-- fixed invalid spacing of dots in relative imports (#6, #13)
-
-- fixed invalid splitting after comma on unpacked variables in for-loops (#23)
-
-- fixed spurious space in parenthesized set expressions (#7)
-
-- fixed spurious space after opening parentheses and in default arguments (#14, #17)
-
-- fixed spurious space after unary operators when the operand was a complex expression
- (#15)
-
-### 18.3a0
-
-- first published version, Happy 🍰 Day 2018!
-
-- alpha quality
-
-- date-versioned (see: https://calver.org/)