enh: Minor refactoring of auxiliary functions used to read/write GIFTI files [IO]
enh: Minor refactoring of auxiliary functions used to read/write GIFTI files [IO]

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