Added the underscore as the default variable
Added evaluate in ndArray to allow evaluation of a function over an ndArray elementwise
Added ability to store and read arrays from files
Added arbitary precision support
Just trying to merge my fork with the master branch.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/NumCpp.layout
	src/obj/Debug/main.o
	src/obj/Debug/parser.o
	src/obj/Debug/routines.o
	src/obj/Debug/variables.o