- I've started with a small refactor, Command to function. This was done as
the most obvious way to do it (to me) as in the original, would not compile
in Nim due to violating memory lifetimes. I could have made it take a
ref seq[Item], but then I would need to instatiate a ref seq and I didn't
want to make a change that drastic. Also due to Nim's UFCS, the ultimate
implementation would be basically the same anyway.
