More testing and tools
Code : Changes to enable comparison of both range finder fusion methods

Pick one or the other - not both for flight
Better innovation gate parameter
Code : remove repeated write of gndHgtSigma value
Fix data loading
Update plotting
Data load fix
Plotting fixes
Update plot to include altitude
ground state inhibition defined by airspeed fine
in comparison plot: use raw sensor value and not the value copied to the EKF (which depends on flags)
newDistData should only be true if distance measurement is valid
Merge pull request #12 from thomasgubler/gnddist

Test Harness Gnd dist fixes
Merge branch 'gnddist' of github.com:priseborough/InertialNav into gnddist
Merge pull request #11 from priseborough/gnddist

Gnddist