Merge pull request #14 from MuMech/dev

2.0.4 Release
Merge pull request #31 from MuMech/dev

2.0.5 Release
Merge pull request #46 from MuMech/dev

2.0.6 Release
Merge pull request #47 from MuMech/dev

2.0.6 Release, version number fix
Merge pull request #62 from MuMech/dev

2.0.7 Release
Merge remote-tracking branch 'upstream/master' into dev
Merge remote-tracking branch 'upstream/dev' into dev
Merge remote-tracking branch 'upstream/dev' into dev
Merge remote-tracking branch 'upstream/dev' into dev
Fix Vector6 Add and GetMagnitude

magnitude is always positive so you can't check if it's negative.
Improve RCS troque

Works better with linear RCS and rotated RCS block
Need more improvement since it still use the same value for P and Y
Improve RCS Torque - Y and P torque are now different
Merge branch 'RCS-Improvement' of https://github.com/sarbian/MechJeb2 into sarbian-RCS-Improvement
Edits to sarbian's RCS improvements.

Mainly, VesselState.rcsThrustAvailable uses world coordinates, not vessel-relative coordinates.
Reverting a temporary change in my local copy of the Maneuver Planner that I accidentally included when merging sarbian's RCS improvements.