moose / Moose / 1490

93%

Pull #158

travis-ci

Fix various issues with coercions and native hash delegations

I'm fairly sure this has never worked properly since I implemented inlining
for native traits. This particular combination of issues - coerceable hash
_members_ and certain delegated methods - had just never been tested.

This fixes the issues and adds some small optimizations as well, avoiding
type checking "new" members in methods like clear & delete, where there are no
new members (though we still want to type check the hash itself).

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