I have Implemented the PLU algorithm for any square matrix. This speeds the computation of the inverse and the determinant. Some bugs where corrected as well.
My goal is to be able to implement basic macroeconomic models on webpages. I discuss some ideas that I might implement in the new Matrix class in the future, depending on their usefulness and the time they might take. Feel free to give some suggestions if you feel they should be part of a matrix class.