`cnpj-gen` v3

[juliolmuller]

Version 3+ will be structured similarly yo the PHP and Python version of the packages:

• Main component should be object-oriented, so a class should wrap the logic of generating CNPJ.
• Create a class to manage formatter options and apply default values when necessary.
  • Options are meant to be changed by using properties assignment, not getters and setters functions anymore.
• Add support to alphanumeric CNPJ ([cnpj-gen] Update package to support alphanumeric CNPJ #19)
• Create custom errors for ALL exepcted errors.
• Validate and parse arguments, when possible, and throw a custom TypeError.
• The following components are now expeced to be exported from the final bundle:
  • CnpjGenerator (base class)
  • CnpjGeneratorOptions
  • cnpjGen (should be a bound function of the generate method of a default instance).
  • CnpjGeneratorTypeError (abstract)
  • CnpjGeneratorOptionTypeError
  • CnpjGeneratorException (abstract)
  • CnpjGeneratorOptionPrefixLengthException
  • CnpjGeneratorOptionPrefixInvalidException
• Update unit tests
• Update documentation