10_to_fsaverage: generate surface instead of volume
20_pysurfer_*: using clust images, variable data_min, and semi-inflated brain
40_montage_functions.R: using 1x4 layout instead of 2x2
40_report-surfaces.Rmd: for the 1x4 layout, need to arrange the filenames properly. removed the glm regression part as not needed.