add ubuntu ppa support
Merge pull request #407 from cosmo0920/add-ubuntu-ppa

add ubuntu ppa support
Bump up version and update dependency
Require rspec-its to remove deprecation warnings
Merge pull request #419 from serverspec/require-rspec-its

Require rspec-its to remove deprecation warnings
Bump up version
Update subproject
add spec for Arch check_installed with version for valid case
Remove the gems that everyone doesn't need
Merge pull request #420 from cosmo0920/add-arch-installed-package-with-ver

add spec for Arch check_installed with version for valid case
Define rspec tasks only if RSpec is defined
fix darwin spec
Merge pull request #424 from cosmo0920/fix-spec-darwin

fix darwin spec
NixOS support
Merge pull request #425 from cosmo0920/nixos-support

NixOS support
Add mtime method to file type
Merge pull request #426 from serverspec/file-mtime

Add mtime method to file type
Bump up version
Update subproject