Warnings about unknown props with React 15.2.0

[jonase]

With react version 15.2.0 I get warnings such as

Warning: Unknown props `hoverAnimation`, `dataPoint`, `handleMouseOver`, `handleMouseLeave` on <rect> tag.

with the BarChart (probably with other chart types as well). I believe the reason is that all props are delegated to the <rect> tag for example here.

[yang-wei]

hmmm... never know 15.2.0 is out...

Thanks for the issue