[Bf-python] multiple rotations for a rotation matrix calculated simultaneously

[Tom Musgrove]

Would it be useful to add this function that calculates all rotations at 
once for a rotation matrix?

http://skal.planet-d.net/demo/matrixfaq.htm#Q36

According to the author

'So, it is obvious that by using the optimised algorithm, a performance 
achievement of 1000% is achieved!'

relative to calculating the x,y, and z rotation matrices individually and 
then multiplying them to get your final rotation matrix.

Tom M.
LetterRip

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