krzysu/flot.tooltip — pull request #59 by cus (2014-02-02 19:55:43+00:00)
Title: use item.datapoint instead of item.series.data[item.dataIndex]

These two may not be equal if the graph contains auto inserted points (e.g.
line steps).

Fixes issue 31.

Signed-off-by: Marton Balint