Some scripts for
    - importing complex (=multidimensional) spreadsheets into matlab/octave
    - pivoting (permute) and exporting to csv files

The xlsc <--> csv exports are done outside matlab.


convert spreadsheet to csv using xlsx2csv [github.com/dilshod/xlsx2csv]
    command: xlsx2csv -a source.xlsx csvdir

set some parameters manually in
    import_csv.m

run export csv
    export_csv.m
    - this does the permutation to desired dimensions and exports to multiple csv files