Not really an issue but...

[joserafaelsv]

Not really an issue, just a thank you message. I was about to work on matrices operations in pure python, but then found this repo. I'd like to add another reason for doing this and not simply using numpy, and it is that some calculators are emerging that ship a "reduced" version of python. you can't use numpy on them, but you have basic python available, meaning you can extend their functionality a lot, but only using pure python. Considering this calculators come at a fraction of the price of, say, TI nspire or HP prime, any math-related thing made on pure python will be valuable there. Thanks.