Added fixelmult, a command to multiply two fixel images. Can be used to mask effect size fixel images by a significant fixel mask. Not sure if we need a fixelcalc at this stage, however something to think about in the future.
Added fixelmult, a command to multiply two fixel images. Can be used to mask effect size fixel images by a significant fixel mask. Not sure if we need a fixelcalc at this stage, however something to think about in the future.

MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3