v1.1

• Added SwedbankBankkontoValidationError exception when checksum calculation fails for Swedbank (may need different handling since some valid Swedbank accounts may have incorrect checksum)
• Added is_swedbank() method for handling Swedbank specific logic
• Added expected_account_length() for getting account length based on clearing number
• Fixed validating Sparbanken Syd and Riksgälden accounts
• Updated account validation data

Initial release

Version 0.2.0

Improved Luhn calculation.
Travis CI usage updated
History doc corrected.