What is a Stanza?
A Stanza is an Effect (or Effect sub-type, such as Stream)
which dispatches its result(s) to the Redux Sonnet middleware.
Sonnet instantiations take a root stanza in a similar manner to how Redux
Saga accepts a root saga or how redux-observable requires a root epic.
The type of a Stanza is as follows:
declare const const stanza: Stanza.Stanza<R>
stanza: import Stanza
Stanza.Stanza<type R = /*unresolved*/ any
R>interface Stanza<R = never>
A Stanza is an Effect that produces void, never fails, and requires the SonnetService.
A Stanza is simply an Effect which can never fail and de facto requires
provisioning of the SonnetService to facilitate coordination with Redux.