Branch 6, version 0.51 has a couple of important bug fixes.
An old bug in Copper that had gone under the radar for a while: The system functions “all” and “any” had been flipped in functionality. Each one was doing the other’s job. The bug was probably introduced during a rewrite of those functions.
CallbackWrapper was also fixed. The Copper callback is now disowned in the destructor so its lifetime is now correctly tied to the CallbackWrapper.
