enh: Save three multiplications when computing Matrix::Det3x3 [Numerics]
enh: Save three multiplications when computing Matrix::Det3x3 [Numerics]

schuhschuh/MIRTK,schuhschuh/MIRTK,schuhschuh/MIRTK,BioMedIA/MIRTK,schuhschuh/MIRTK,BioMedIA/MIRTK,BioMedIA/MIRTK,BioMedIA/MIRTK