Terminate members in reverse
test #arity on Celluloid::Method
determine the arity of methods upon creation
Merge pull request #156 from chuckremes/master

Add #arity to Celluloid::Method
Fix stack trace format

MRI does not insert a space here
Fix spec oversight found in cbe5d92
Avoid preloading #arity
Merge pull request #160 from richmolj/master

Fix #arity implementation
Merge pull request #152 from justincampbell/reverse-terminate-order

Terminate supervision group members in reverse order