Features for Concrete images js about shopify-theme-framework

[Cam]

For reference, though mostly already accommodated https://www.shopify.com/partners/blog/product-variants

[oscarstranger]

It'd be great to build in some lazy loading support in this too, as well as some methods for linking variants and images.

Also to consider would be how ratios build on this method too, so we can still utilise background image ratio blocks as easily as we can with Slick sliders #71

[Cam]

This won't be required with the new version.