Any plans to add support for currency_exchange_adjustment?

[TOuhrouche]

Hi, Thanks for the awesome library! Do you have plans to add support for currency_exchange_adjustment returned from the Transactions API? This is needed so one can figure out the payment amount in the shop currency.

Again, thanks for the great library.

[nozzlegear]

Hey! Usually a property is only left out of the package because it didn't exist when the class was written, or because it wasn't documented. Looks like it is documented in this case, so we can add it in! Would you be willing to send a pull request to add this property? No worries if not, I can add it whenever I have some spare time to work on the package.