Adds two CAShapeLayer subclasses, EXTTermLayer and EXTDifferentialLayer, holding term and differential data respectively.
Removes old chart view highlight code. I’m leaving -chartView:highlightPathForToolAtGridLocation: for the moment because we may use similar code to ‘highlight’ non-existing differentials.
Moves layer term creation and highlighting from EXTChartView to EXTTermLayer.
Moves differential highlighting from EXTChartView to EXTDifferentialLayer.
Removes obsolete code.
Removes unused code.
Fixes a CTLineRef leak.
Fixes a memory leak.
Fixes memory leaks.