added the src
added time fields
added tests
added asserts to the field-tests
changed param
changed _fields to base_fields
Added get and set.
Added the clean_field_value
removed not used imports.
added the UrlSerializerField
added action_field
Added serializer test
fixed the __get__ and __set__
added the registry for serialzers.
Added the EmailField.
fixed show only fields and exclude fields.
fixed the field as property
changed the update_field method.
Added DecimalField.
Renamed the module name.