Rename RefineryUtilities --> WindowUtils and move ApplicationFrame to demo package.
Added getTextBounds() for AttributedString.
Add superscripted labels for LogAxis.
Update tests.
Remove minorTickCount override and rename minorTickCount --> minorTickIntervals (to reflect how it is used).
Rename TestUtilities --> TestUtils.
Fix failing test.
Simplify - remove HistogramDataset (preferring the SimpleHistogramDataset which will be renamed).
Clean up tests for removed classes.
Rename histogram datasets.