Second paragraph in README: > The focus of gc is to provide a conceptually clean implementation of a mark-and-sweep GC, without delving into the depths of arch

Second paragraph in README: > The focus of gc is to provide a conceptually clean implementation of a mark-and-sweep GC, without delving into the depths of architecture-specific optimization (see e.g. the Boehm GC for such an undertaking). It should be particularly suitable for learning purposes and is open for all kinds of optimization (PRs welcome!).