Feature Request: filter/query by list of items

[allthesignals]

Some APIs support this way of querying a resource to return based on any matches in a given list: posts?name[]=Karl&name[]=Noam

There is also posts?name=Karl,Noam.

It would be great to query by an array or comma-separated list. I imagine this can be done through a codelet right now, however, this would be tremendously useful!