No method matching rref(::Adjoint{Int64,Array{Int64,2}})

[rmcsqrd]

Thanks for making this package. I'm having a small issue when I try and use the rref() function on the transpose of a matrix.

Array works:

julia> using RowEchelon
julia> M = [1 -3 5 1 6;
           0 -1 1 0 3;
           3 -4 10 3 3;
           1 -1 3 1 0
           ];

julia> rref(M)
4×5 Array{Float64,2}:
 1.0  0.0   2.0   1.0  -3.0
 0.0  1.0  -1.0  -0.0  -3.0
 0.0  0.0   0.0   0.0   0.0
 0.0  0.0   0.0   0.0   0.0

julia> typeof(M)
Array{Int64,2}

Adjoint Fails:

julia> rref(M')
ERROR: MethodError: no method matching rref(::Adjoint{Int64,Array{Int64,2}})
Closest candidates are:
  rref(::Array{Complex{Float64},2}) at /Users/riomcmahon/.julia/packages/RowEchelon/7gDya/src/RowEchelon.jl:80
  rref(::Array{T,2}) where T<:Complex at /Users/riomcmahon/.julia/packages/RowEchelon/7gDya/src/RowEchelon.jl:79
  rref(::Array{T,2}) where T<:Union{Float16, Float32, Integer} at /Users/riomcmahon/.julia/packages/RowEchelon/7gDya/src/RowEchelon.jl:81
  ...
Stacktrace:
 [1] top-level scope at REPL[77]:1

julia> typeof(M')
Adjoint{Int64,Array{Int64,2}}

Converting to Matrix (or Array) works:

julia> rref(Matrix(M'))
5×4 Array{Float64,2}:
 1.0  0.0   3.0   1.0
 0.0  1.0  -5.0  -2.0
 0.0  0.0   0.0   0.0
 0.0  0.0   0.0   0.0
 0.0  0.0   0.0   0.0

I suggest that the following line be added to src/RowEchelon.jl:

rref(A::Adjoint) = rref(Matrix(A))

I will submit an appropriate pull request - just wanted to have a relevant issue to reference in my PR. Thanks.