median on dask arrays

[dcherian]

Dask has updated it's percentile, quantile implementation: dask/dask#4677

Can we now update our median method to work with dask arrays?

[carolinarias]

Is anyone working on adding the median method?

[shoyer]

Yes, we could do this as long as we’re careful to default to the new algorithms. See also #1524 (comment)

[stsievert]

I have a median method over in dask/dask#3819