Streaming responses

[andreaferretti]

Especially for returning large files

[andreaferretti]

Done for large files, still to do in general

[s0kil]

@andreaferretti Any update on this feature?

[andreaferretti]

As mentioned, streaming files support is already available using fileAsync.

I still have to implement a more general solution which works for FutureStream - which did not exist at the time this issue was opened. It should be rather easy, I will look into it