Changelog for python3-pyproject-metadata: 0.11.0 -> 0.12.1
Source: docs/changelog.md

## 0.12.1 (7-3-2026)

Fixes:

- Collect a config error instead of raising a raw `TypeError` when
  `project.dynamic` contains a non-string (unhashable) entry with
  `all_errors=True`.

## 0.12.0 (7-3-2026)

Features:

- Support [PEP 808](https://peps.python.org/pep-0808/) (partially dynamic
  project metadata) (METADATA 2.6).
- Add support for Python 3.15.
- Warn ([PEP 685](https://peps.python.org/pep-0685/)) when an extra name in
  `project.optional-dependencies` is not a valid name. The extra is still
  emitted, only a `ConfigurationWarning` is produced.

Fixes:

- Error on an unset dynamic version instead of silently writing
  `Version: 0.0.0`. If `"version"` is declared in `project.dynamic` but never
  assigned by the build backend, writing the metadata now raises a
  `ConfigurationError` (`Field "project.version" missing`), restoring the 0.8.x
  behavior that regressed in the 0.9 rewrite.
- Don't crash on a non-table `[project]` when `all_errors=True`.
- Tighten `license-files` glob checks and private-tag parsing.
- Handle braces in user data within error messages.
- Correct the `Import-Namespace` field name in the metadata mapping.
- Fix UTF-8 author and maintainer names.

Performance:

- Cache `get_type_hints` and precompile dispatch patterns.

Documentation:

- Fix a stale dynamic docstring and a broken module example.
- Add a documentation project URL.

Internal and CI:

- Refactoring: consistent dataclass decorators, sorted constant entries, and
  removal of duplicate imports and dead code.
- Cover defensive branches in dispatch helpers and validators.
- Secure GitHub Actions workflows and bump pinned/downstream dependencies.