Reduce JMH time with fewer iterations, less pre-heat
Reduce JMH time with fewer iterations, less pre-heat

Benchmark now includes one warmup iteration instead of 5 and 3 measurement
iterations instead of 5.  That 60% reduction in iterations should save
significant time while still providing reasonable measurements.

The test requires almost 30 minutes on Intel(R) Core(TM) i5-6400 CPU.
May need to reduce it even further in the future.

MarkEWaite/git-client-plugin,MarkEWaite/git-client-plugin,MarkEWaite/git-client-plugin