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Drumroll please ... 🎉
So we've received an awesome contribution #28 by @sheweichun to add pie charts to the mix:
We were all for percentage charts, as they are easier to read and don't clump colors (probably the reason GitHub ignores them as well): http://www.storytellingwithdata.com/blog/2011/07/death-to-pie-charts
Even so, what does everyone think? 😃