DMD 2.000 alpha release

[Walter Bright]

Charles D Hixson wrote:
> The potential argument in favor of const strings seems, to me, to be 
> speed.  But I don't know whether it applies.

The argument for const strings isn't speed, it's understandability. 
People tend to think of them as value types (like ints), and by making 
strings const (or invariant) it makes them behave like value types.