reject non-square distance matrices explicitly
reject non-square distance matrices explicitly

neurodata/ndgrutedb,neurodata/ndgrutedb,neurodata/ndgrutedb,openconnectome/m2g,openconnectome/m2g,neurodata/ndgrutedb,neurodata/ndgrutedb,openconnectome/m2g,openconnectome/m2g,openconnectome/m2g,neurodata/ndmg,neurodata/ndgrutedb,openconnectome/m2g,neurodata/ndgrutedb,neurodata/ndgrutedb,openconnectome/m2g,openconnectome/m2g