Updating to latest version of the Stripe PHP legacy bindings.

packages/stripe-php/CHANGELOG

packages/stripe-php/VERSION

packages/stripe-php/lib/Stripe.php

packages/stripe-php/lib/Stripe/ApiRequestor.php

packages/stripe-php/lib/Stripe/ApiResource.php

packages/stripe-php/lib/Stripe/BitcoinReceiver.php

packages/stripe-php/lib/Stripe/BitcoinTransaction.php

packages/stripe-php/lib/Stripe/Charge.php

packages/stripe-php/lib/Stripe/FileUpload.php

packages/stripe-php/lib/Stripe/RequestOptions.php

packages/stripe-php/lib/Stripe/Stripe.php

packages/stripe-php/lib/Stripe/Util.php

packages/stripe-php/test/Stripe.php

packages/stripe-php/test/Stripe/BitcoinReceiverTest.php

packages/stripe-php/test/Stripe/ChargeTest.php

packages/stripe-php/test/Stripe/CustomerTest.php

packages/stripe-php/test/Stripe/FileUploadTest.php

packages/stripe-php/test/Stripe/RefundTest.php

packages/stripe-php/test/Stripe/RequestOptionsTest.php

packages/stripe-php/test/Stripe/TestCase.php