ContinuumIO/bokeh — pull request #1118 by chinasaur (2014-09-02 21:24:12+00:00)
Title: Protocol fix

https://github.com/ContinuumIO/bokeh/issues/1104

In this patch, it checks that original is datetime64[ns] before workaround converting. But if original is some other units it does no conversion at all; let me know if you want some other behavior (raise?)