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 If `animate(...)` (of any kind) is called, no further calling of `invalidate()` is necessary to refresh the chart.
 
+In order to support animations below Honeycomb, this library makes use of the awesome [**nineoldandroids library**](https://github.com/JakeWharton/NineOldAndroids) developed by Jake Wharton.
+
 More documentation and example code coming soon.