Additional progress on v1.4.8

• Free Checkout added to the core. Planning to leave it as an automatic, always-on fallback if the total = 0.00
• Coupon moved to Payment page as this makes the most sense. Now if you enter a coupon for 100% off and free shipping, free checkout will appear.
• Added option to Download edit page for pushing the updated version to previous customers. Useful for those selling software that gets free updates.
• Added email and comments to order invoice
• Thickbox gallery for main image and additional images is standard now
• Various other fixes
• Lots more to do...

Still aiming for the 3rd week of May