0.8.0

What's Changed

• Support specifying the metadata_version as 2.1, 2.2, or 2.3
• Always normalize extras following PEP 685
• Preserve the user-specified name style in the metadata. .canonical_name added to get the normalized name
• Require "version" in the dynamic table if unset (following PEP 621)
• Support extras using markers containing "or"
• Support empty extras
• Using .as_rfc822() no longer modifies the metadata object
• Fix email-author listing for names containing commas
• Separate core metadata keywords with commas, following the (modified) spec
• An error message reported project.license instead of project.readme
• Produce slightly cleaner tracebacks
  Fix a typo in an exception message
• Subclasses now type check correctly
• The build backend is now flit-core

Full Changelog: 0.8.0rc2...0.8.0

0.8.0 RC 2

What's Changed

• fix: typing annotation for StandardMetadata.from_pyproject() by @dnicolodi in #111
• fix: typo in exception message by @dnicolodi in #108
• revert: validate description by @henryiii in #112
• chore: bump to 0.8.0rc2 by @henryiii in #113

Full Changelog: 0.8.0rc1...0.8.0rc2

0.8.0 RC 1

What's Changed

• Support specifying the metadata_version as 2.1, 2.2, or 2.3
• Always normalize extras following PEP 685
• Preserve the user-specified name style in the metadata. .canonical_name added to get the normalized name
• Require "version" in the dynamic table if unset (following PEP 621)
• Support extras using markers containing "or"
• Support empty extras
• Using .as_rfc822() no longer modifies the metadata object
• Fix email-author listing for names containing commas
• Validate the description is one line
• Separate core metadata keywords with commas, following the (modified) spec
• An error message reported project.license instead of project.readme
• Produce slightly cleaner tracebacks
• The build backend is now flit-core

Full Changelog: https://github.com/pypa/pyproject-metadata/commits/0.8.0rc1