Makes a quaternion with the specified forward and upwards directions in a Unity compatible manner. Implementation from http://answers.unity3d.com/questions/467614/what-is-the-source-code-of-quaternionlookrotation.html
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Makes a quaternion with the specified forward and upwards directions in a Unity compatible manner. Implementation from http://answers.unity3d.com/questions/467614/what-is-the-source-code-of-quaternionlookrotation.html