Update to 0.04
    
    - New upstream release 0.04:
      - Some small test changes for the latest Module::Implementation and
        Class::Load
    - Bump Class::Load version requirement to 0.15
    - BR: perl(constant), perl(Module::Implementation) ≥ 0.04,
      perl(Test::Requires), perl(Test::Without::Module) and perl(version) for test
      suite