Test to prove bug when composing broken roles succeeding after first try.
apply changes recommended by doy. This no longer works with 'prove'.
Use isnt ( exception {... instead of dies_ok, and add the missing one back in. Add a local  so the tests pass. Use the proper 'use lib'.
Merge pull request #34 from Kuraiou/master

Test to prove bug when composing broken roles succeeding after first try...