provide an audiocontext for superpowered to use.

[weepy]

I already have my audiograph running, and I need to dynamically load superpowered and use some of the provided nodes. Currently Superpowered creates it's own audiocontext, so I would like to be able to provide the one I already have. The alternative is to either always load superpowered and use its context (ideally not for a number of reasons), or pipe audio between the audiocontext via a mediastream which sounds pretty brittle.

Any ideas?!