Cerberus

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Released on February 10 2014

- Added 'number' data type, which validates against both float and integer
values (Brandon Aubie).
- Added support for running tests with py.test
- Fix non-blocking problem introduced with 0.5 (Martin Ortbauer).
- Fix bug when _error() is calld twice for a field (Jaroslav Semančík).
- More precise error message in rule 'schema' validation (Jaroslav Semančík).
- Use 'allowed' field for integer just like for string (Peter Demin).

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Released on December 4 2013

- 'validator.errors' now returns a dictionary where keys are document fields
and values are lists of validation errors for the field.
- Validator instances are now callable. Instead of `validated
= validator.validate(document)` you can now choose to do 'validated
= validator(document)' (Eelke Hermens).

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Released on September 24 2013.

- 'validate_update' is deprecated and will be removed with next release. Use
'validate' with 'update=True' instead. Closes :issue:`21`.
- Fixed a minor encoding issue which made installing on Windows/Python3
impossible. Closes :issue:`19` (Arsh Singh).
- Fix documentation typo (Daniele Pizzolli).
- 'type' validation is always performed first (only exception being
'nullable'). On failure, subsequent rules on the same field are skipped.
Closes :issue:`18`.

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Released on July 9 2013.

- docstrings now conform to PEP8.
- `self.errors` returns an empty list if validate() has not been called.
- added validation for the 'float' data type.
- 'nullable' rule added to allow for null field values to be accepted in
validations. This is different than required in that you can actively change
a value to None instead of omitting or ignoring it. It is essentially the
ignore_none_values, allowing for more fine grained control down to the field
level (Kaleb Pomeroy).

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Released on April 18 2013.

- 'allow_unknown' option added.

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Released on March 15 2013.
Codename: 'Claw'.

- entering beta phase.
- support for Python 3.
- pep8 and pyflakes fixes (Harro van der Klauw).
- removed superflous typecheck for empty validator (Harro van der Klauw).
- 'ignore_none_values' option to ignore None values when type checking (Harro
van der Klauw).
- 'minlenght' and 'maxlength' now apply to lists as well (Harro van der Klauw).