Transfer gyro low pass filter to estimate.ino

Separate raw gyro data and filtered rates to different variables

gazebo/flix.h

@@ -26,6 +26,7 @@ float motors[4];
 int16_t channels[16]; // raw rc channels
 float controls[RC_CHANNELS];
 Vector acc;
+Vector gyro;
 Vector rates;
 Quaternion attitude;
 

gazebo/simulator.cpp

@@ -64,7 +64,7 @@ public:
 		step();
 
 		// read imu
-		rates = flu2frd(imu->AngularVelocity());
+		gyro = flu2frd(imu->AngularVelocity());
 		acc = this->accFilter.update(flu2frd(imu->LinearAcceleration()));
 
 		// read rc