Add : You can now get in all the callbacks either the name or a B::OP object representing the current op if you pass the new 'op_info' option to wizard() with respective values VMG_OP_INFO_NAME and VMG_OP_INFO_OBJECT.
Doc : Document magic on array/hashes values.
Fix : Completely skip free callbacks during global destruction.
Tst : Tests now pass again on 5.8.3 and lower (they were broken since 0.27).
Tst : Test magic on symbol table and on array/hash values.