Hydrofoil Generation 0.7.2

0.7.2
- Relaxed tack detection logic making Tutorial 4 & 5 too hard
- Wing camber inversion uses projected TWA only when above 10kn
avoids wing "flapping" at race start
- Fixed occasional server crash on invalid foil control input
- Fixed "foil speed sensitivity" slider erroneously modified when
when clicking "edit boat controls"