Small Vectors Proposal

[Frits van Bommel]

Mikola Lysenko wrote:
> Whoops!  I wasn't really thinking too carefully when I wrote that. 
> You're correct, a lexicographic ordering is definitely the simplest in 
> this case.

It also fits really well with the "plain static array" proposed change: 
this is already what arrays do[1] :).

[1]: Well, if they're the same length. Otherwise they compare by length, 
presumably for efficiency.