Duplicate Function Names

[benfulcher]

The catch22 module has function names like DN_HistogramMode as 2017 versions, when these functions have been updated in the latest hctsa, and thus there are duplicate but different functions with identical names—rock-bottom bad practice for software dev, and a problem with poor namespace control in Matlab.
May need to change this in catch22 to disambiguate when sitting in this package, or do some object-oriented implementation to make e.g., catch22.DN_HistogramMode clearly distinguished (Using the directory with @ name convention?)