Correct parameter types for Nested field in docs
Merge pull request #3 from elbaschid/fix_type_for_param_in_nested_field

Correct parameter types for Nested field in docs
Remove repeated marshalling logic

Adds a Marshaller class that can store errors
Remove unnecessary to_data method
Remove to_data from SerializerABC
Add dateformat class Meta option
Support for UUID objects
Move isoformat and rfcformat to utils.py
Move validation functions to validate.py

Add to documentation
Change param ordering for DateTime

Also add docs for filtering output
Minor refactor in marshaller
Ensure that to_json returns bytestrings
Add Time field
Add Date field
Add TimeDelta field
Fix py26 compatibility with timedelta
Fix bug with including a property in fields list
Add 'additional' option
Prevent TypeError from being raised from issubclass
Update examples