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* Add modules for the following number formats:
- CBU (Clave Bancaria Uniforme, Argentine bank account number)
(thanks Luciano Rossi)
- EIC (European Energy Identification Code)
- NACE (classification for businesses in the European Union)
- LEI (Legal Entity Identifier)
- n° TVA (taxe sur la valeur ajoutée, Monacan VAT number)
- PIB (Poreski Identifikacioni Broj, Serbian tax identification number)
* Add online check example that finds valid formats for a given number
* Fix support for Ñ in Spanish Referencia Catastral
* Updates to U.S. Employer Identification Number (thanks Greg Kuwaye)
* Various minor improvements