0.7 release soon?

[Brian Gough]

I think we could make an 0.7 release this weekend.  

I have finished the MINPACK nonlinear least-squares routine, and just
need to write up the documentation for it now.

Roadmap

0.7
 |---- finish currently uncompleted directories, make everything consistent
0.8
 |---- feature freeze. finish tests and docs
0.9
 |---- final testing
1.0