|It's very "basic" at the moment, I'm afraid. I'm still working on most of the stuff - and yes, I perfectly know += and -=. Used them once, but heh. Both are equally fast.|
As for the mathlike, try finding another way to make the bloody computer, whose mind works in decimal, understand how to parse an equation. It's bloody hard. I did what I could, and the next time I send an update, it'll be better (Hopefully), and able to differentiate trig functions (and logarithms). It just takes time to build an intelligence, however simple it is.