Merge branch 'refs/heads/upstream-master'
Updated multiline chart with configurable area fill and dot styles
Bug fix for default dotStyle on multiline chart
Merge branch 'refs/heads/upstream-master'
Merge branch 'refs/heads/upstream-master'
BarChart updates:
 - Adjust x positioning for "nums" text elements
 - Add styles to "nums" text elements to center aligh vertical and horizontal

SimpleDonut updates:
 - bug fix
Added a few configurable settings for bar chart icons.
Tweaked 'canShowIcons' function per Peter B.
Added an 'interpolate' config option and applied it to the multiline chart.
Merge pull request #4 from jackshakes/master

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