Corrected feature calculation for compactness to be the isoperimetric quotient correctly, namely 4 pi A / L^2 (previously the 4 pi was in the denominator).
Corrected feature calculation for compactness to be the isoperimetric quotient correctly, namely 4 pi A / L^2 (previously the 4 pi was in the denominator).

ljschumacher/tierpsy-tracker,ljschumacher/tierpsy-tracker,ljschumacher/tierpsy-tracker,ver228/tierpsy-tracker,ver228/tierpsy-tracker,ver228/tierpsy-tracker