Code review comment for lp:~thumper/nux/properties

Ok, I know I am beating a dead horse here; you two agree so I am good
with that :-)

Nonetheless, I don't think my point has come across: My worry is that
this is a purely dynamical property system and that it is exactly
*unlike* member variables in that they are not related to (let alone
defined in) the class. So two instances a1 and a2 of class A could
easily have totally different sets of properties. I wanted to avoid
this by somehow making the property specs a part of the class
definition in the .h file (probably by using some magical static
initializers). This would also make property setup slightly
(massively?) lighter at runtime because it would be per class and not
per instance.