worked on grid-walking

worked on grid-generation
added helper library for nav-meshes
started working on nav meshes

sensors/imu/MagnetometerData.h

@@ -73,7 +73,7 @@ private:
 };
 
 namespace std {
-	MagnetometerData sqrt(const MagnetometerData& o) {
+	inline MagnetometerData sqrt(const MagnetometerData& o) {
 		return MagnetometerData(std::sqrt(o.x), std::sqrt(o.y), std::sqrt(o.z));
 	}
 }