grafx - Extensible Java Graphics Package Code

Optimizing LinearNookAndCrannyMetric a bit. Compared output values to those of
previous function (defined in EvalFunction) and they match 100%.

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

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

Optimizing SquaredHeightMetric a bit. Tested to make sure that output values
match those of previous function.

Increasing qSearchBreadth back to 24. Went 32 -> 16 -> 24. Good number.

Optimizing WellMetricUtils a tiny amount.

Adding line of commented out code. The old call to coveredHoleMetric().

Making some fairly simple, straightforward optimizations to the code. Just
trying to squeeze out a tiny bit of better performance; this will hardly make a
difference actually.

Changing level twenty three from 6x5 pit to 7x5. A tad easier.

Adding stuff to TODO.txt.