Adyen Java API Library 1.2.0

#43 add all positbities with the payout into the recurring contract enum
#45 Change payment request -> metadata to Map <String, String>
#49 Use correct datetime format for ISO-8601
#51 HttpURLConnectionClient line fix
#53 Make the Client stateless
Added payment token setter
Add brand codes as constants

Adyen Java API Library 1.1.0

#34 Added skinCode, merchantAccount, hmacKey into DL request
#30 Created separate CancelOrRefund request object

Adyen Java API Library 1.0.0

Initial release.