:beach_umbrella: Formatter Preview style

[MichaReiser]

This is an umbrella issue to track the progress towards supporting the preview style

• Introduce new PreviewStyle enum with Enabled and Disabled variants and add it to PyFormatOptions #7218
• Formatter: prefer_splitting_right_hand_side_of_assignments preview style #6975
• Formatter: string_processing preview style #6936
• Improved parenthesis handling for long expressions
  • Formatter: Parenthesize long expressions in calls #8436
  • Formatter: Parenthesize long expressions in dicts #8437
  • Formatter: parenthesize_conditional_expressions preview style #8438
• Improved multiline string handling
• Formatter incompatibility: ellipses are not inlined in .py files #7440
• Add newline after module docstrings (module_docstring_newlines) #7995
• Formatter: hug_parens_with_braces_and_square_brackets preview style #8279
• Formatter: dummy_implementations preview style #8357

[konstin]

I wrote up the state and TODOs of compatibility for the planned 2024 black stable style: #8678. Some of the items listed here are not included, e.g. the improved string processing

[MichaReiser]

I wrote up the state and TODOs of compatibility for the planned 2024 black stable style: #8678. Some of the items listed here are not included, e.g. the improved string processing

Thanks. I'll have a closer look once I manage to get through all notifications 😅

[MichaReiser]

Closing in favor of #8678

[zanieb]

@MichaReiser I actually liked having this issue for general preview formatter style discussion whereas #8678 is specifically for the 2024 Black preview implementations.