Support more of the Stripe API calls

[BentChainRing]

Here are a few Stripe calls that are currently not supported in the WebService::Stripe module v1.0300:

update card(): https://stripe.com/docs/api/curl#update_card
get_charges(): https://stripe.com/docs/api/curl#list_charges
get_balance_transaction(): https://stripe.com/docs/api/curl#retrieve_balance_transaction
get_balance_transactions(): https://stripe.com/docs/api/curl#balance_history
get_refund(): https://stripe.com/docs/api/curl#retrieve_refund
update_refund(): https://stripe.com/docs/api/curl#update_refund
get_refunds(): https://stripe.com/docs/api/curl#list_refunds

yes, you can still make direct calls to the Stripe API with the lower level WebService::Client get/post methods, but I'd love to keep my code just referencing the WebService::Stripe lib. :-)

[breadwild]

Would also like:

update_card() (though it can be done by updating the customer)
also:
$sub = \Stripe\Subscription::retrieve("sub_90QLZeLcBgcp0V"); $sub->cancel();