At this point all optimizations that make the codebase more complicated should be postponed. Finally someone made a good enough GIL-less patch a couple of versi

At this point all optimizations that make the codebase more complicated should be postponed. Finally someone made a good enough GIL-less patch a couple of versions back, this should be analysed and integrated ASAP so that we take advantage of today's multicore systems. MS's 25% speed improvement is nice but I an not sure it doesn't move things in a wrong direction.