Removed labeled donut chart, removed unnecesary extend in axis systems
Renamed TextLabel chart as Text
Fixed text centering in donut chart
Removed unnecessary extends for Axis, YXYAxis, XYAxis.
Labeled triangle chart creates directs mixins, instead of doing it
using MultipleInstancesMixin
Full code refactoring, comments updated
Examples updated
Switch to Math functions instead of "if" statement in linear scale