Pokemon number aliases

[Harry Cruse]

It might be nice to add an alias to each pokemon to allow it to be called by its number as well as its name. e.g. Bulbasaur could be :pokemon-001: and Chikorita could be :pokemon-152:
Would you guys be happy if I raised a pull request for this?

Also, is there a reason why the gen-2 pokemon in pokemon-prefix.yaml are each assigned 3 times?

Thanks!

[Honza M]

Can I +1 both of those?