WooCommerce Bambora (Beanstream) 2.8.1

* Tweak - Allow filtering the API passcode for requests
* Fix - Prevent errors when a Subscriptions "change payment" or Pre-Orders tokenization fails
* Misc - Update the SkyVerge Plugin Framework to v5.1.5

* Tweak - Only enable the Bambora Credit Cards gateway for new installs
* Fix - Correctly display card type icons for the card number input when switched
* Fix - Ensure Custom Checkout inputs are displayed properly for certain browser setups

* Feature - Add the new Bambora Credit Cards gateway to support the latest Bambora features including refunds, captures, tokenization for Subscriptions & Pre-Orders support, and more!
* Feature - Enhanced payment form for a better customer experience, uses new retina payment method icons and live inline validation
* Feature - You can now opt to show detailed decline messages to your customers, no more generic "an error occurred" messages
* Misc - Change text domain to woocommerce-gateway-bambora
* Misc - Remove support for PHP 5.2
* Misc - Add support for WooCommerce 3.4
* Dev - Namespace the SkyVerge Plugin Framework and move to the /vendor directory