Parametric (t-test) statistics. Needs work for configurability.
Implement auto-ipcluster start (IPython 4-engine cluster) +/- InProcess kernel when not available

The existing message/data passing handles seamless transfer of data between each as they
start and stop, i.e. you can run on cluster; kill it; run the follow up on InProcess; then
continue again on the cluster.

Configuration of the cluster numbers, etc. needs to be made available (need a config panel).