#67 (Mar 28, 2018, 8:57:47 AM)

1. initial propeller efficiency model (commit: ca4d658) (details / githubweb)
2. modify tests (commit: 875e650) (details / githubweb)
3. initial qprop (commit: a06db84) (details / githubweb)
4. Add prop structure and performance models (commit: f30e2ea) (details / githubweb)
5. Add prop structure and performance models (commit: 129cd22) (details / githubweb)
6. Updated propeller to base and performance class (commit: eb7c39d) (details / githubweb)
7. update units tests to include prop model (commit: 9bfa23c) (details / githubweb)
8. Changes per mike's review (commit: 3b2c57b) (details / githubweb)
9. small changes (commit: 195883c) (details / githubweb)
10. remove qprop (commit: 602606f) (details / githubweb)
11. add static model in (commit: c47db82) (details / githubweb)
12. add missing __init__.py (commit: 05cbb85) (details / githubweb)

GitHub pull request #157 of commit 05cbb85fa7ffa137368157bc82ba1b0990e5e72b, no merge conflicts.