B4J Library [B4X] [XUI] xChart Class has been updated to version 2.1

The xChart Class has been updated to version 2.1.

EDIT: 2018.07.30 Version 2.1
Added the NbXIntervals property
Added the SnapShot property
Added the Rotation property
Added the DrawOuterFramw property
Added a clip function to avoid lines being drawn outsides the grid
Added a Touch event for YXCharts returning the X and Y coordinates of the cursor

EDIT: 2018.07.19 Version 2.0
Added XSclaMnValue and XSclaMaxValue properties

EDIT: 2018.07.14 Version 1.9
Modified the data structure for YXChart to allow lines with different number of points.