23.1a1

This release provides a preview of Black's 2023 stable style. Black's default formatting style includes the following changes:

• Enforce empty lines before classes and functions with sticky leading comments
  (#3302) (22.12.0)
• Reformat empty and whitespace-only files as either an empty file (if no newline is
  present) or as a single newline character (if a newline is present) (#3348)
  (22.12.0)
• Implicitly concatenated strings used as function args are now wrapped inside
  parentheses (#3307) (22.12.0)
• Correctly handle trailing commas that are inside a line's leading non-nested parens
  (#3370) (22.12.0)
• --skip-string-normalization / -S now prevents docstring prefixes from being
  normalized as expected (#3168) (since 22.8.0)
• When using --skip-magic-trailing-comma or -C, trailing commas are stripped from
  subscript expressions with more than 1 element (#3209) (22.8.0)
• Implicitly concatenated strings inside a list, set, or tuple are now wrapped inside
  parentheses (#3162) (22.8.0)
• Fix a string merging/split issue when a comment is present in the middle of
  implicitly concatenated strings on its own line (#3227) (22.8.0)
• Docstring quotes are no longer moved if it would violate the line length limit
  (#3044, #3430) (22.6.0)
• Parentheses around return annotations are now managed (#2990) (22.6.0)
• Remove unnecessary parentheses around awaited objects (#2991) (22.6.0)
• Remove unnecessary parentheses in with statements (#2926) (22.6.0)
• Remove trailing newlines after code block open (#3035) (22.6.0)
• Code cell separators #%% are now standardised to # %% (#2919) (22.3.0)
• Remove unnecessary parentheses from except statements (#2939) (22.3.0)
• Remove unnecessary parentheses from tuple unpacking in for loops (#2945) (22.3.0)
• Avoid magic-trailing-comma in single-element subscripts (#2942) (22.3.0)

Please try it out and give feedback here: #3407

A stable 23.1.0 release will follow in January 2023.