[UPDATE] removed accessor method. Updated find stream tests.
[UPDATE] test documentation.
[UPDATE] removed iqr transform from prototype.
[UPDATE] outlier prototype.
[UPDATE] outlier prototype.
[UPDATE] count prototype.
[UPDATE] stream prototypes.
[UPDATE] removed function factories where not needed.
[UPDATE] kurtosis prototype.
[UPDATE] function documentation. Max stream prototype.
[UPDATE] mean stream prototype.
[UPDATE] median stream prototype.
[UPDATE] min stream prototype.
[UPDATE] function documentation.
[UPDATE] function documentation.
[UPDATE] function documentation.
[UPDATE] pcc stream prototype.
[UPDATE] quantile stream prototype.
[UPDATE] skewness stream prototype.
[UPDATE] sum stream prototype.