Log Message:
py-ipykernel: updated to 4.7.0

4.7.0
- Add event loop integration for :mod:asyncio.
- Use the new IPython completer API.
- Add support for displaying GIF images (mimetype image/gif).
- Allow the kernel to be interrupted without killing the Qt console.
- Fix is_complete response with cell magics.
- Clean up encoding of bytes objects.
- Clean up help links to use https and improve display titles.
- Clean up ioloop handling in preparation for tornado 5.