New validation rules:

• #147: Adds NFe (Brazil) Access Key validation rule. (@andreyknupp)
• #102: Many file system rules. (@henriquemoody)

Bug fixes:

• #175: UploadedException class name fixed to match file. (@kodok-buncit)
• #168: CountryCode rule, conforming ISO spec, accepts DK (Denmark). (@jhmilan)
• #151: Creates missing CnpjException. (@leonnleite)
• #146: sf rule updated to work with Symfony\Validator >= 2.1. (@augustohp)

Enhancements:

• #166: Better version constraints for composer development dependecies. (@GrahamCampbell)
• #167: Phone rule now accepts brazilian 9th digit for mobiles. (@henriqueoliveira)
• #148: Allow internationalized domains and option to skip TLD check on domains. (@mta59066, @alganet and @brunoric)
• #160, #162: Syntax highlight and typo fix on README. (@DavidePastore)
• #135: Fix grammar error on README. (@loganville)