Woocommerce Elavon Converge Vm Payment Gateway Version History

* Misc - Tested up to WooCommerce 10.4.2
 * Misc - Improve escaping and sanitizing throughout codebase
 * Dev - Replace usage of deprecated `wc_enqueue_js()` with `wp_add_inline_script()`
 * Dev - Fixed improper usage of gethostbyname(). It's unlikely this error was actually experienced as its usage was a fallback in the event earlier checks failed.