I agree with all the backward compatibility *goals*, but I think redefining "v5.x" to mean "exactly v5.x" instead of "equal or greater than v5.x" is a bit contrary to that aim. Since exact version semantic are a new feature of the core awe could preserve backward compatibility by having some new syntax like "use =v5.18". Instead of what it's always meant (i.e. ">=v5.18").Thread Previous | Thread Next