Allow string for mandate date

v2.1.6

create DateTime for string mandate date

New Return type for IBAN data

added a new Return data object for IBAN information

Allow changing of XML Namespace

v2.1.3

allow xml namespace to be set

Remove namespace requirement (fixed)

v2.1.2

remove requirement for namespace

Remove namespace requirement

v2.1.1

add payout calls

Payout Support

• Add support for Payout transactions
  (check with your integration engineer if this option is supported by your configuration)

PHP7 Compatibility

Compatibility with PHP 7.x

Breaking Changes:

• Transaction object "Void" has been renamed to "VoidTransaction"

fixes composer and fluent interface

Merge pull request #1 from raum42/master

Minor changes