…ill be overriden by setting explicitly in options when calling self.stat. Now clone options in self.stat since it is modified per stat by approximation.
…eved has graph view model size passed in as index to support updating series data on existing subject.
…d stat to track the rate of incoming values
…cate summary creation
…tored workflow of completing samples and standard deviation. No longer doing multiple saves to mongo
…abase 2) no longer double completing interval_samples 3) filling reservoir and calculating summaries in the correct order 4) easier understanding