Checkout-sdk

* Added new Integrated Platforms payment instrument endpoints to Accounts (CS2)
* Fix CI for Python 3.6 as reached EOL which is no longer supported for new versions
* Added mandatory fields for MIT/CIT payments sources (CS1/CS2)
* Restore `first_name` and `country` fields from PaymentRecipient schema
* Support Secret Key for `Accounts` & `Transfers` (CS2)
* Deprecated `Risk` client (CS1/CS2)

* Added support for Payments Query.
* Added support for Reports API (default).

* Added `upgrade_reason` to 3DS request and response.
* Removed payment_type: `unscheduled`
* Added `email_addresses` to ContactDetails (default).
* Added support for Customer Source (default).

* Added Support for ALMA source (CS2)
* Added Support for One Klarna source (CS2)
* Added Support for Fawry source (CS2)
* Added missing fields for PayPal source (CS2)
* Added missing fields for Sofort source (CS2)
* Added missing fields for ID source (CS2)
* Added scheme to all Session sources (CS2)

* Removed Baloto Source.
* Added support for QZ Country Code.
* Added support for P24 source. (CS2)
* Added support for Knet source. (CS2)
* Added support for Bancontact, Postfinance and Multibanco source. (CS2)
* Added support for STC source. (CS2)
* Added amount_allocations and marked marketplace as deprecated

* Added support for Afterpay source. (CS2)
* Added support for Benefit source. (CS2)
* Added support for QPay source. (CS2)
* Added support for EPS and GiroPay source. (CS2)
* Added support for Alipay Plus source. (CS2)
* Added property to KlarnaSource (CS1)