import engine directly from turbofan repo

[mayork]

@bqpd what is the best way to do this? give turbofan an init so it's installable?

[bqpd]

yup, a setup.py! Then use pip install -e to install it. @mjburton11 knows the way.

This won't work with our repo testing immediately, but I think it might with just a little bit of a trick which we should test sometime.

[mayork]

fixed via commit 8dd5da142b4a78e25439