v4.13.0

• Add support for creating validator classes whose metaschema uses a different
  dialect than its schemas. In other words, they may use draft2020-12 to define
  which schemas are valid, but the schemas themselves use draft7 (or a custom
  dialect, etc.) to define which instances are valid. Doing this is likely
  not something most users, even metaschema authors, may need, but occasionally
  will be useful for advanced use cases.

Full Changelog: v4.12.1...v4.13.0

v4.12.1

What's Changed

• Use rST markers in README by @hynek in #987

Full Changelog: v4.12.0...v4.12.1

v4.12.0

• Warn at runtime when subclassing validator classes. Doing so was not
  intended to be public API, though it seems some downstream libraries
  do so. A future version will make this an error, as it is brittle and
  better served by composing validator objects instead. Feel free to reach
  out if there are any cases where changing existing code seems difficult
  and I can try to provide guidance.

Full Changelog: v4.11.0...v4.12.0

v4.11.0

What's Changed

• jsonschema deserves a ✨fancy✨ readme by @hynek in #983

Full Changelog: v4.10.3...v4.11.0

v4.10.3

• jsonschema.validators.validator_for now properly uses the explicitly
  provided default validator even if the $schema URI is not found.

Full Changelog: v4.10.2...v4.10.3

v4.10.2

• Fix a second place where subclasses may have added attrs attributes (#982).

Full Changelog: v4.10.1...v4.10.2

v4.10.1

• Fix Validator.evolve (and APIs like iter_errors which call it) for cases
  where the validator class has been subclassed. Doing so wasn't intended to be
  public API, but given it didn't warn or raise an error it's of course
  understandable. The next release however will make it warn (and a future one
  will make it error). If you need help migrating usage of inheriting from a
  validator class feel free to open a discussion and I'll try to give some
  guidance (#982).

Full Changelog: v4.10.0...v4.10.1

v4.10.0

• Add support for referencing schemas with $ref across different versions
  of the specification than the referrer's

Full Changelog: v4.9.1...v4.10.0

v4.9.1

• Update some documentation examples to use newer validator releases in their
  sample code.

Full Changelog: v4.9.0...v4.9.1

v4.9.0

• Fix relative $ref resolution when the base URI is a URN or other scheme
  (#544).
• pkgutil.resolve_name is now used to retrieve validators
  provided on the command line. This function is only available on
  3.9+, so 3.7 and 3.8 (which are still supported) now rely on the
  pkgutil_resolve_name <https://pypi.org/project/pkgutil_resolve_name/>_
  backport package. Note however that the CLI itself is due
  to be deprecated shortly in favor of check-jsonschema <https://github.com/python-jsonschema/check-jsonschema>_.

Full Changelog: v4.8.0...v4.9.0