Django-rest-form-fields

Bug fixes
1) Fixed bug in FileField exceptions, so they are valid ValidationError instances ([issue 7](https://github.com/M1hacka/django-rest-form-fields/issues/7))
2) Fixed by in JsonField and RestCharField: they skipped `run_validators` in case value is in empty_fields ('', [], {}) ([issue 6](https://github.com/M1hacka/django-rest-form-fields/issues/6))

Versioning
Version 1.2.3 was skipped due to critical error in pypi files.
Updates
FileField bug has been fixed

1) Added base forms
2) Added ability to change field source
3) Fixed some bugs with timezones in TimezoneField

Now UrlField inherits RegexField

Updates
1) Added IdArrayField and IdSetField
2) Added django 2.0 travis auto-testing

Updates
1) Fixed RegexField and python 2.7 compatibility
2) Changed supported python version to 3.3+
3) Added travis integration