Log Message:
py-stdnum: updated to 1.11

changes from 1.10 to 1.11

* Add modules for the following number formats:
  - DNI (Documento Nacional de Identidad, Argentinian national identity nr.)
  - VNR, SVNR, VSNR (Versicherungsnummer, Austrian social security number)
  - NI (Número de identidad, Cuban identity card numbers)
  - AMKA (Αριθμός Μητρώου Κοινωνικής Ασφάλισης, \ 
Greek social security number)
  - Asmens kodas (Lithuanian, personal numbers)
  - MAC address (Media Access Control address)
  - IDNO (Moldavian company identification number)
  - CURP (Clave Única de Registro de Población, Mexican personal ID)
  - Fødselsnummer (Norwegian birth number, the national identity number)
  - New Zealand bank account number
  - Personnummer (Swedish personal identity number)
* Code style improvements
* Change Dominican Republic DGII check URL to HTTPS
* Support Ecuadorian Cedula and RUC of foreigners
* Add format() function for Argentinian CUIT number
* Support passing formatted numbers to all get_birth_date() and similar functions
* Handle Dominican Republic DGII lookup returning multiple entities