Merge pull request #1 from cbshiles/master

Update
:confetti_ball: Added .gitattributes
Merge branch 'master' of https://github.com/vecst/Integral
GCD

Added gcd as a function
updated to the newest one modified by cbs
I'm over this haha
Reduce will now import I'm not sure if that was a bug in windows or a fault of my own.
Deleted npr list as we weren't using it. Deleted some comments that were obsolete.
Added snip.py which includes the npr list
Put all variables as parameters of magic