[Pharo-project] namespace collisions

Does Pharo have namespaces? If not, may I request that we remember to apply due consideration when choosing names for globals, including class-variables? The top version of ScriptLoader in the Pharo repository consumes the name #Repository, preventing any class or global from using that name. I am now faced with a namespace collision with another package that wants to declare a class named Repository. A class-var in "ScriptLoader" really doesn't need to consume such a valuable name does it? Can this be renamed to something more specific to free up that name? - Chris