rename for 0.4: Distance => Distances?

[StefanKarpinski]

It's become a bit of a convention to use the plural for package names – freeing up the singular Distance for a type name. In this case, it's not really needed since the mathematical term for a distance is "metric", but it might be good to follow the convention when the ecosystem starts switching over to Julia 0.4.

[lindahua]

I have been considering doing this. Just that not sure whether this change would cause a lot of troubles.

cc: @IainNZ

[StefanKarpinski]

That's why I'm thinking that the 0.4 transition – which is going to be a big one – would be a good time.

[IainNZ]

The best way to do it, I think is:

1. Duplicate this package to JuliaStats/Distances.jl, so you keep git history.
2. Tag it as v0.1 (or whatever) of Distances.jl
3. Tag new release of Distance.jl that prints a warning on load and says to change to Distances.jl

[StefanKarpinski]

Agreed. That should do the trick.

[lindahua]

done.
see https://github.com/JuliaStats/Distances.jl