charts 8.x-3.0-alpha8

This release includes major changes from -alpha7. There are three main areas to pay attention to as you update your module:

1) The library installation process has changed dramatically (for the better)! The README.txt files in the three charting provider sub-modules give explicit instructions about how the libraries should be installed. Once you do this, subsequent module updates should be easier.

2) The way to render a chart is more clear and uses the buildVariables() method (instead of the ModuleSelector() method). There are numerous examples of how to implement this: look in Charts API Example, Charts Blocks, or the charts.module file.

3) The chart plugins have changed, and going to a page with your View may cause a WSOD if you don't first edit the View(s), reset the format settings to select your charting library, and re-save your View.

All the changes since -alpha7:

• C3 Charts donut Chart Doesn't Render Properly
• Enable stacking
• Disable exporting for Highcharts
• Y-Axis title not working for HighCharts
• Add polar plotting to Highcharts graphs.
• The Pie chart example does not work with Highcharts
• Notices logged when viewing charts
• Highcharts Title not displaying
• Foreach error when editing style options
• Some highcharts settings are not working
• Dimentions in Highchart not working
• How to render a chart from a controller
• Charts Plugins
• In Default chart configuration, get AttachedAssets.php notice
• Charts API Example has issue with ModuleHandler.php