this matches closer to convention from existing functions - angle_v3v3() angle_normalized_v3v3(). also added assert to ensure argument given to axis_angle_normalized_to_mat3() is in fact normalized.
this matches closer to convention from existing functions - angle_v3v3() angle_normalized_v3v3(). also added assert to ensure argument given to axis_angle_normalized_to_mat3() is in fact normalized.