Update docs, CHANGELOG, and bump dev version
Merge branch 'jmcarp-dev' into dev
Store error message string and exception on error in Flask.handle_error
Document flask error-handling, CHANGELOG, and bump dev version
Validator must return False for error to be raised

If None is returned, validation will pass
Allow extra metadata to be stored on an Arg
Bump version and update CHANGELOG
Fix bug that cause use_kwargs to fail when args are missing
Log exceptions in FlaskParser.handle_error method
Make 'query' a valid target name
Add exception logging to tornadoparser and bottleparser
Bump dev version
Document error handling in Django
Add test for django error handling

handle_error should just reraise error
Parser.handle_error logs error
Store status_code and additional data on ValidationErrors
Allow ValidationErrors to determine HTTP status codes
Update docs
Allow a Arg to have a list of validators
Allow list of validators to be passed to Parser.parse