is_vector function added.
Added support for is_empty method.
is_finite() method for matrices of floating point numbers introduced.
is_infinite() function.
Implementation of is_logical () method.
row-wise maximum method implemented.
requiring that matrix elements implement Show which is useful for debugging purposes.
max_col_wise function implemented.
min_row_wise and min_col_wise functions.
empty matrix error
min and max scalar values.
Implemented mul_elt and div_elt
add scalar and mul scalar functions.