TODO: Flesh out the README
The code organization is very simple-minded -- almost all main driver functions are named solve<day>_<part>.
In general each of the drivers returns a different data type (either a string or an integer thus far). So, I exported a silly little convenience macro @comptime along with a generated function solve. So, you can call e.g. solve7_1(input_string) using
@comptime solve(7, 1)