4.0.0

Breaking changes

• Check for MappingSchema instance in colander_*_validator (#503)
  (explicit error is raised when sequence schema is used for example)

Bug fixes

• Fix updating request.validated dict in colander_*_validator (#503)

3.6.1

• Do not return content if response is 204 No Content (fixes #521)

3.6.0

• Add validation support for multipart/form-data (#510)

3.5.1

• Fix usage of localizer in Errors when l18n is deactivated. (#505)

3.5.0

• Translate Error description field when added with request.errors.add() (#502)

3.4.4

Internal changes

• Remove remaining usage of deprecated .best_match()

3.4.3

Internal changes

• Remove usage of deprecated .best_match() (thanks @abk-code)

3.4.2

Internal changes

• Fix DeprecationWarning for unrecognized backslash escapes (#491)

3.4.1

Bug fixes

• support both marshmallow 2.x and 3.x unknown key handling (@ergo, #495)

Internal changes

• Enable support for Python 3.7
• cornice.errors and validation tests now use the builtin json module instead of simplejson (@okin, #494)
• Cleanup tests (@karantan, #488)

3.4.0

• Add traverse support. For more information regarding Hybrid Applications see
  Pyramid documentation
  (#483).