grafx - Extensible Java Graphics Package Code

Optimizing QuadraticNookAndCrannyMetric a bit more by caching elevations.

Optimizing LinearNookAndCrannyMetric a bit more by caching elevations.

Optimizing HeightFluctuationMetric some more.

Optimizing AlternateNoChildLeftBehindMetric.

Optimizing NoChildLeftBehindMetric.

Adding policies in a comment, related to concurrency and well/pit size.

Optimizing PlugTheHoleMetric.

Changing the factor of LINEAR_BOWL_METRIC slightly because the computation of
upper bound is more accurate now.

Optimizing LinearBowlMetric and QuadraticBowlMetric a tiny bit, and capping the
score in case computed upper bound is not mathematically accurate.

Optimizing QuadraticNookAndCrannyMetric a bit. Compared output values to those
of old function and they match.