NaveGo: NaveGo Release v0.7-alpha

NaveGo is mostly working properly.

Two drawbacks are pending to be resolve:

1. Simulation of dynamic bias has to be revised. The idea is to simulate an inertial sensor with certain levels of correlation time and dynamic bias variance, and verify this values by using the Allan variance method.

2. The acceleration in the Z axis is considered negative downwards. This situation does not correspond with NED coordinates, but ensures a correct velocity output.