Feature request: make output streaming optional

[mfranciszkiewicz]

Provide means to disable output streaming and / or make it a secondary mode of operation by default. Streaming computation output from multiple (20+) providers is taxing on a yapapi application and affects overall performance.

The implementation should be as simple as adding an additional param to Executor.__init__, but that feels tad out of place. If you think otherwise, I'm willing to create a PR.

[azawlocki]

I think that an additional parameter would be okay here. Are we talking about just reverting to using event polling as the default mode or something more (limiting the number of events retrieved somehow)?

[mfranciszkiewicz]

I think that an additional parameter would be okay here. Are we talking about just reverting to using event polling as the default mode or something more (limiting the number of events retrieved somehow)?

I'm thinking of reverting to polling by default