[omaha] dask array

[Bob Haffner]

I've been learning a bit about dask array lately.  An alternative when it
comes to larger data sets (Terabytes).  Provides a numpy like interface,
but limited functionality.  Thought it might be interesting to others.

dask page
http://dask.pydata.org/en/latest/

recent video about dask and the reasons behind it
https://www.youtube.com/watch?v=HLME2WKTJJ8

comparing dask to spark.
https://github.com/mrocklin/dask/commit/5e30e4bda53b5542e7aa77f6c0b0af993671ac07