code clean-up
reverting activeContexts_ to private
a test executor for trying various checks, e.g. finding the contexts
which have been cleaned and re-saturated to the same state
minor tweaks, renaming TestExecutor, etc.
code re-org, superceding Results by Metrics, better organization of
multi deltas incremental task (sub-classes for correctness checking,
non-incremental classification)
some renaming
all tasks and collections return Metrics now
fixed a type in computing the total rule time
using a sorted map for metrics
tweaks, parameter renaming, etc.
always calling finish() on the rule app factory's engine, so that the
stats can be updated among other things
fixing multiple issues with statistics
accounting for rule and conclusion stats in benchmarking
Merge remote-tracking branch 'origin/elk-new-incremental' into elk-new-incremental