WooCommerce Moneris Gateway 3.4.3

* Feature - Add support for Apple Pay
* Tweak - Allow filtering the API request data
* Dev - Refactor the API to extend the SkyVerge Plugin Framework
* Dev - Update the SkyVerge Plugin Framework to use namespaces and move it to the /vendor directory
* Misc - Remove support for WooCommerce 2.6
* Misc - Require PHP 5.6+

* Misc - Add support for WooCommerce 3.7

* Fix - Fix JavaScript error when editing address in My Account and Hosted Tokenization is enabled
* Misc - Add support for WooCommerce 3.6
* Misc - Require PHP 5.4+
* Misc - Update Hosted Tokenization testing Profile IDs