drawing y-axis label differently

...a/com/xeiam/xchart/internal/chartpart/AxisTickLabels.java

...n/java/com/xeiam/xchart/internal/chartpart/AxisTitle.java

.../java/com/xeiam/xchart/internal/chartpart/ChartTitle.java

...main/java/com/xeiam/xchart/internal/chartpart/Legend.java