django/django-localflavor — pull request #62 by krisb78 (2013-12-04 08:14:05+00:00)
Title: Fix REGON validation.

- There is a special case when the result of modulo 11 division equals
to 10. In this case, the correct checksum is 0. Taken from:
http://wipos.p.lodz.pl/zylla/ut/nip-rego.html#regon