==== Version 2.3.1.5 / 2.4.1.5 - 22.01.2021 ====
  * Added the fields for donation certificate info to direct debit payment call.

==== Version 2.3.1.4 / 2.4.1.4 - 18.12.2020 ====
  * Removed email parameter for 3-D Secure 2.0.

==== Version 2.3.1.3 / 2.4.1.3 - 11.12.2020 ====
  * Added error codes for 3-D Secure 2.0 cases.
  * Added support for 3-D Secure 2.0 to payment page calls.
  * Fixed a bug in the new function testApiCredentials.

==== Version 2.3.1 / 2.4.1 - 25.11.2020 ====
  * Added new function for testing API credentials: GiroCheckout_SDK_Tools::testApiCredentials().
  * Added optional fields for 3-D Secure 2.0 to creditcard API (available on backend from December 2020) 

==== Version 2.1.31 / 2.2.31 - 17.01.2020 ====
  * Added support for parameter otherpayments in Payment Page.

==== Version 2.1.30 / 2.2.30b - 07.12.2019 ====
  * Added parameter to Request class to allow for easier use of development server.
  * Fixed Paydirekt cart class to make sure numeric values are not returned as strings in the JSON.

==== Version 2.1.29 / 2.2.29 - 18.10.2019 ====
  * Added support for the new credit card iframe form calls initform and finalizeform

==== Version 2.1.28 / 2.2.28 - 06.09.2019 ====
  * Provides a function to obtain the payment method logo name
  * Introduces constants for the transaction types

==== Version 2.1.27 / 2.2.27 - 21.08.2019 ====
  * Added parameter certdata for donation certificate in paypage service.
  * New call for paypage donation certificate implemented.

==== Version 2.1.26 / 2.2.26 - 09.07.2019 ====
  * Corrected Bluecode spelling
  * Added check if function curl_exec is present and enabled

==== Version 2.1.25 / 2.2.25 - 28.05.2019 ====
  * Finalized support for Bluecode e-commerce payment method

==== Version 2.1.24 / 2.2.24 - 12.04.2019 ====
  * Return better error messages when authentication data is invalid.
  * Improved error returns and better handling of empty return values.

==== Version 2.1.23 - 13.12.2018 ====
  * Bugfix in Paydirekt: Cart did not accept items with a value of 0,00 EUR.
  * 2 new optional parameters securedAuth and securedAuthUntil for secured authorizations in Paydirekt (this function is not yet available in Paydirekt production) (see API).
  * First Github version of the SDK is available.

==== Version 2.1.22 - 16.08.2018 ====
  * New optional parameter 'single' that controls the repeatability of the payment link (see API).

==== Version 2.1.21 - 18.07.2018 ====
  * New optional Parameters for paydirekt shipping address in payment page
  * Minor corrections in example files

==== Version 2.1.20 - 06.07.2018 ====
  * Bugfix in Paypage init call: Parameter description is now optional.
  * CPSP support for giropay

==== Version 2.1.19 - 05.01.2018 ====
  * Support for the field gcObvName in giropay.

==== Version 2.1.18 - 22.11.2017 ====
  * Support for the new orderid parameter for payment pages.

==== Version 2.1.17 - 04.11.2017 ====
  * Refunds for credit card, direct debit and maestro now accept a parameter for the purpose. 

==== Version 2.1.16 - 19.10.2017 ====
  * Fixed bug that prevented the field mandateReference to be properly read from the direct debit with form service response.

==== Version 2.1.15 - 04.09.2017 ====
  * New Paypage call for requesting a list of GiroCockpit projects and a new projects parameter in the initialization call of a paypage transaction.
  * New logo for Sofort (now Klarna).

==== Version 2.1.14 - 20.07.2017 ====
  * URL parameters are now optional for paypage transactions.

==== Version 2.1.13 - 17.07.2017 ====
  * Added missing notification parameters for paypage.

==== Version 2.1.12 - 13.06.2017 ====
  * New logos for direct debit.

==== Version 2.1.11 - 30.05.2017 ====
  * Connection Timeout for server connection increased generally from 3 to 15 seconds.

==== Version 2.1.10 - 11.04.2017 ====
  * Re-included functions for Windows environments setSslCertFile() and setSslVerifyDisabled().

==== Version 2.1.9 - 24.03.2017 ====
  * Bugfix in generation of credit card logo filename
  * Implemented support for Void for credit card, direct debit and Paydirekt

==== Version 2.1.8 - 02.03.2017 ====
  * Enhanced statistics information on used SDK versions (internal change)

==== Version 2.1.7 - 14.02.2017 ====
  * For Paydirekt: Support for new cart types ANONYMOUS_DONATION and AUTHORITIES_PAYMENT implemented.

==== Version 2.1.6 - 10.02.2017 ====
  * Restored backwards compatibility with PHP 5.2.x
  * Parameter issuer for iDEAL is not mandatory anymore (bank will be inquired if missing. But beware: this must be enabled in GiroCockpit.)

==== Version 2.1.5 - 02.02.2017 ====
  * Implementation of new options for proxy configuration (see [[en:phpsdk:start#operation_via_a_proxy_server|Operation via proxy server]])

==== Version 2.1.4 - 18.01.2017 ====
  * Corrections in error message texts

==== Version 2.1.3 - 10.01.2017 ====
  * Bugfix CURL Helper
  * New Logo files

==== Version 2.1.2 - 09.01.2017 ====
  * Integration of Paypage API
  * Integration of Maestro API
  * Correction date format in log file
  * Text corrections
  * New logos MasterCard, JCB
  * Fix UTF8 bug in Paydirekt
  * Support digital cart in Paydirekt

==== Version 2.1.0 - 31.08.2016 ====
  * Integration of Blue Code API
  * Corrected bug in SOFORT Überweisung: Wrong Endpoint

==== Version 2.0.3 - 29.06.2016 ====
  * Improved and corrected some examples.

==== Version 2.0.2 - 08.06.2016 ====
  * Mandatory fields may now not be empty anymore.
  * Improved some examples.

==== Version 2.0.1 - 11.05.2016 ====
  * Giropay+Giropay-ID is now integrated into Giropay, only one class.
  * Examples for Giropay+Giropay-ID improved.

==== Version 2.0.0 - 09.05.2016 ====
  * Direct debit has new parameter "type" (AUTH, SALE) (GiroCheckout_SDK_DirectDebitTransaction)
  * Direct debit Capture implemented (GiroCheckout_SDK_DirectDebitCapture)
  * Direct debit Refund implemented (GiroCheckout_SDK_DirectDebitRefund)
  * iDEAL Refund implemented (GiroCheckout_SDK_IdealPaymentRefund)
  * Credit card has new paramter "type" (AUTH, SALE) (GiroCheckout_SDK_CreditCardTransaction)
  * Credit card Capture implemented (GiroCheckout_SDK_CreditCardCapture)
  * Credit card Refund implemented (GiroCheckout_SDK_CreditCardRefund)
  * Paydirekt Transaction implemented (AUTH, SALE) (GiroCheckout_SDK_PaydirektTransaction)
  * Paydirekt Capture implemented (GiroCheckout_SDK_PaydirektCapture)
  * Paydirekt Refund implemented (GiroCheckout_SDK_PaydirektRefund)
  * Giropay: Field BIC is now optional (GiroCheckout_SDK_GiropayTransaction and GiroCheckout_SDK_GiropayTransactionWithGiropayID)
  * EPS: Field BIC is now optional (GiroCheckout_SDK_EpsTransaction)
  * EPS: Included new logos
  * Sofortüberweisung implemented (GiroCheckout_SDK_SofortUwTransaction)
  * Function GiroCheckout_SDK_Tools::getCreditCardLogoName() was corrected and adapted, new logos for all card combinations