Modified ArrayDataSet's handling of column fields. Previously, if a fieldname were associated with an integer column index (by opposition to a column range or slice) then it would be returned as a Nx1 matrix. Now if a fieldname is associated with an integer column index, then it will make a field which is a vector of length N. The old behaviour can still be achieved by associating a fieldname with the slice(col, col+1).

import filetensor
import nnet_ops