v2.8.0: Feature Release

What's Changed

• Adding BTCPay, Bitcoin and LN icons and link to BTCPay invoice on order overview. by @ndeet in #74
• WooCommerce Blocks: Add support for separate payment gateways. by @ndeet in #75
• Show BTCPay invoice checkout link on order details page for customers. by @ndeet in #76
• Add refund links to order details page. by @ndeet in #77

Full Changelog: v2.7.5...v2.8.0