updated to version 2.1.3
Fixed issue where a c.f.FlowStep would attempt to detect if it should be skipped regardless of whether the "runID" had been set or not on the c.f.Flow enabling restartable flows.
Fix for NPE if c.f.FlowProcess returns null config.
updated readme
Fix for c.p.a.AggregateBy not honoring the global system property threshold value if not overridden on the ctor.
Fix for c.f.FlowProcess#getNumProcessSlices() incorrectly returning zero in local mode, should be 1.
Fix for extra trailing ']' in c.t.Tap#toString().
version 2.1.3
merge 2.1.3 into 2.2