Support French domestic checksum (RIB)

Add __len__ for IBAN and BIC classes

BBAN position overwrites for FR and CZ

Added 440 additional bank records for Spain

Fix Belgian BBAN checksum generation

Add support for Sudan IBANs and update various banks

Enable PEP-0561 compliant typing support

Add Swedish banks to bank registry

Add support for Belgian checksums

Add support for country specific BBAN checksums