Bart Kastermans

Note: ``` git checkout master ``` is sufficient as if the branch is not found but there is a tracking branch that one is used.

If I understand the suggestion correctly, I would expand and suggest to add the elementary row operations. (switching, multiplication, and row addition; see http://en.wikipedia.org/wiki/Elementary_matrix). Not sure what the semantics of...

I think the timing should be part of the testing framework; a quick scan of the [RUnit manual](http://cran.r-project.org/web/packages/RUnit/RUnit.pdf) suggests that timing can be part of the output of a run...

I should also say that having had timing tests run on travis; their timing is rather unreliable. Different runs of the same test give significantly different timing results.