automatic shortcut url to challenges via number?

[shiffman]

I wonder if there's a clever way we could make this work automatically:

https://thecodingtrain.com/180 --> https://thecodingtrain.com/challenges/180-falling-sand

for all challenges?

[fturmel]

Sure, we could append them to the _redirects file at build time. I can take a stab at implementing this tomorrow if you'd like.