refactor code to use std::vector and start trying to accomodate integers instead of just natural numbers
add basic subtraction. still need to do rebalancing of large sums (and write test cases for all those)
add shit
add makefile and src, lib, obj, test directories
remove obj dir
rename LargeNumber to Integer. Implement addition and rebalancing. Probably buggy versions of subtract, divide, multiply. Absolute value operator (caret)
subtraction works
add a better readme and finish multiplication/division/modular arithmetic
merge release 2.0 to master