Madgewick Filter to get attitude from IMU or MARG. Confirmed IMU ver works well.

Dependencies:   Quaternion

Dependents:   NineIMUAttitude_MadgwickFilter

Revision:
4:85f9e16e445c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Quaternion.lib	Wed Oct 25 08:08:12 2017 +0000
@@ -0,0 +1,1 @@
+https://developer.mbed.org/teams/PQ_Hybrid_Electrical_Equipment_Team/code/Quaternion/#0c20582087b1