Pulling in https://github.com/jakevdp/JSAnimation (which hasn't changed in over a year) would greatly enhance the experience of using animations in the notebook with stock matplotlib. Also, like trendvis, oceancm, and viscm, this would move an very useful matplotlib-based tool into our fold.

The core implementation of JSAnimation is just two parts:

• A new writer, HTMLWriter, which also includes some icons for the HTML controls
• IPython notebook display hook code

The HTMLWriter clearly makes sense in matplotlib (alongside FFMpegWriter, etc.). I'm not sure what to do with the IPython display code. Adding it as a _repr_html might not be too bad.

Thoughts?