Update to 0.27
    
    - New upstream release 0.27
      - Allow packages to be cleaned multiple times
      - Ensure the debugger workarounds are applied only when DB::sub is actively
        used (they are superfluous otherwise)
      - Work around P5#72210, resulting in fails on 5.8.8 -Duselongdouble
      - Fix incorrect name in META (CPAN RT#107813)
    - BR: perl-generators where available
    - Simplify find command using -delete