[Grace-core] Early experience with traits not overriding superobject

[James Noble]

> The first time I got it working, it reported  a conflict on == suitable for any enumerable.

Right. This will only work if traits don't get the default methods - if the overall model discourages trait conflicts rather than encourages and mitigates them.  

Which is my self justification for going with any form of "multiple inheritance" the problems are about clashes and overriding and overload ing. So we need to minimise that!

And for our dialects, we can. 

James