add 'dzil run' and BuildRunner (Jérôme Quelin)
improve behavior of 'dzil clean' with backup files (Jérôme Quelin)
dzil takes an -I option (Jérôme Quelin)
InstallDirs can now provide File::ShareDir-style installs (rjbs,
Jérôme Quelin, nperez)
Role::File now requires a content method (rjbs)
eliminate stupid noise spewed during 'dzil new' (rjbs)