Re: Advent of Nim 2019 megathread

[e]

Having decided to try learning a bit about Nim using AoC2019, I joined the 
[private leaderboard](https://adventofcode.com/2018/leaderboard/private), but 
never expected to be in the top 10 (I'm at 5 now, `dougcurrie`). So, I'll list 
my repo now in case anyone searching for Nim Advent of Code solutions in the 
future looks here. 
[https://github.com/dcurrie/AdventOfCode](https://github.com/dcurrie/AdventOfCode)