ddeint module is broken by newer versions of scipy

[7yl4r]

This means that integration doesn't work for new installs. Scipy 0.12.0+ breaks ddeint.

Options:

1. use pydelay, docs say not tested on windows, will need cygwin
2. use pydde, docs show tested mostly on mac but also working on windows using cygwin
3. use pydde backend through R via Rpy
4. fix ddeint. The creator has not responded to requests for support.

Additional considerations:

• Pydelay has the most community support.
• adding Rpy would allow for lots more functionality through R, but adds 2+ installation steps
• adding pydelay or pydde adds 1+ installation steps

I'm unsure what to do here, and I'm really bummed to have to be getting back into the integration code.