xla

8a5ddb57 - RateTracker smooth every time we report instead of every time we update (#930)

RateTracker smooth every time we report instead of every time we update (#930) * tf dependency update * New smoothing mechanism in RateTracker smooth every time we call .rate as opposed to every time we add * bug fix + pyformat * undo TF commit + made counters floats + global_rate uses time.time() not slef._partial_time * _smooth