log the error at different binning levels
added a documentation note and moved around some typedefs
added BlockedEstimate
do_calculate_plans() now uses BlockEstimate to do the "binning"
consolidated a function, and removed some old comments
added docstring to SimulationUniverse
removed "recent" measurements and the ability to reset estimators

we get the functionality we really want from BlockedEstimate, anyway
no longer use do_calculate_plans() in tests, since it is deprecated