4.0.0

• Update @babel/polyfill to 7.4.4 #1521
• Add maxlength to text options #1531
• Add return instructions in return-saved.html #1525
• Remove Google Plus #1526
• Fix broken conditional statement in share.html #1533
• Enable Facebook like button to be displayed on product page if enabled #1530
• Remove nanobar (loading bar) #1537
• Fix incorrect DOM selectors causing the payment method form on the account page from working properly in Safari #1541
• Add Amazon Pay and Google Pay to payment icons in footer #1542
• Remove head.rsslinks #1539
• Prevent heading from displaying when no price ranges are available #1545
• Utilize srcset for responsive images #1507
• Clean up conditional logic in a couple component templates #1547
• Remove "demo" product conditional logic #1551
• Add responsive breakpoints to product carousel. #1458
• Add nanobar back to fix tests #1553