Add Liquid lexer
Liquid is a templating language by Shopify. We use it in Jekyll and it's used a surprising amount around the web for safe templating.
I would love to see a Liquid lexer added to pygments. There is a WIP one by @maul-esel over on GitHub: https://gist.github.com/maul-esel/6652045 Would it be worth it to submit this lexer as a PR here or is this lexer still a ways off?