ExistenceRatioOutlier & ExistenceRatioThreshold

As promised, we are now releasing 2 more existence ratio verses - ExistenceRatioOutlier and ExistenceRatioThreshold.

These verses, like the previous "ExistenceRatioDrift" and "ExistenceRatioSuddenChange", are useful, for example, in cases when dealing with data sources you don’t have control of, so it might be useful to track the rate at which a field is actually populated.

Setting these verses is done in the same way as their corresponding "average-type" insights, as they are based on a similar algorithm.

NOTE: Using these verse types is equivalent to creating new fields using the "existence_check" field-building function and running "Average" typed verses on them.