• Fix input length check #32

• Fix panic issue for bad luhn inputs with interim numbers #31

Personnummer v3.1 API Spec implemented with one different, instead of AllowCoordinationNumber we use DisableCoordinationNumber because it's better developer experience in Go and the default value of a boolean is false in Go.

• Added options for disable coordination numbers (false by default) and allow interim number (false by default)
• Added support for interim numbers
• Added IsInterimNumber function
• Added GetDate function

• Fixed go module naming for version 3

• Fixed an issue where last four digits in personnumers with invalid data could be parsed.

• Brand new version that follow the new specification.

• Preformances fixes, thanks @ngalayko!