blkdiagM only supports square matrices

[aminya]

blkdiagM uses BlockDiagonals to generate Arrays fast, however now, it only supports square matrices.

Different tasks of this to do plan:

1. Creating an issue in BlockDiagonals

Achievement check:

A1 = ones(2,2);
A2 = 2*ones(3,2);
A3 = 3*ones(2,3);
B = blkdiagM(A1,A2,A3)

B = 7×7

     1     1     0     0     0     0     0
     1     1     0     0     0     0     0
     0     0     2     2     0     0     0
     0     0     2     2     0     0     0
     0     0     2     2     0     0     0
     0     0     0     0     3     3     3
     0     0     0     0     3     3     3

[aminya]

Manual blkdiagM was written with non-square support. Until BlockDiagonals adds returning Arrays and also supports non-square matrices

function blkdiagM(in...)

    argNum=length(in)

    inSize1=collect( size.(in,1) )
    outSize1 = vcat( [0], cumsum(inSize1,dims=1) )

    inSize2=collect( size.(in,2) )
    outSize2 = vcat( [0], cumsum(inSize2,dims=1) )

    out = zeros(last(outSize1),last(outSize2));
    for k=1:argNum
        out[outSize1[k]+1:outSize1[k+1],outSize2[k]+1:outSize2[k+1]] = in[k];
    end

    return out
end

[aminya]

Is fixed in a57a52e using https://github.com/aminya/BlockDiagonals.jl