Streaming support?

[hlship]

Huff's hiccup datastructures can often contain lazily-evaluated structures (via for and map, and so forth).

Currently, to build the resuilt, this must be concatenated into a StringBuilder and then into a RawString.

Pedestal has the ability to represent the body of an HTML response as a function that is passed the (servlet) OutputStream; being able to hook that into Huff could yield faster responses as the intermediate stage (the StringBuilder) would not have to be instantiated first, instead the visit of the datastructure could emit, via an OutputStream (or OutputWriter) the desired content.

[hlship]

Though it's possible that the use of Mailli (which I haven't had a chance to use previously) might negate this possible approach.