Question: Update underlying Liquid version

[caspertl]

Hi!

Thanks for a great framework 👍

Is it possible to update the underlying Liquid version?

Filters like "sum" (https://shopify.github.io/liquid/filters/sum/) does not exist in the current Fluid 2.4.0. In the meantime i've implemented my own sum filter - but it would be nice to have the newest filters and features of Liquid (5.4.0 currently).

[hishamco]

Feel free to submit a PR

[sebastienros]

Feel free to file an issue for any feature that is available in the Shopify's version and not here. Then even better if you can provide a PR for it.