Prior art for slurry

[Anders E. Andersen]

This is a list of prior art for slurry-like frameworks of note, for documentation purposes.

https://github.com/vxgmichel/aiostream

https://github.com/erdewit/eventkit

https://github.com/vodik/asyncitertools

[Anders E. Andersen]

Also -

https://github.com/ReactiveX/RxPY

[goodboy]

@andersea we gotta bunch listed in this issue: goodboy/tractor#140.

It's more then just python stuff though and kind of a mess.