Remove integration tests (we have harmony now)
Move Package::Metadata into its own class
Include Logging in Packagers
Do not cache the result of the Packager search
Do not require forwardable (it is not used)
Move directory helpers into Util module
Use the Metadata generator method in packager
Simplify packager step definitions
Cleanup packager base comments
Remove uses of Base#package_dir and use Config.package_dir
Remove uses of :execute and just use :shellout! directly
Cleanup packager base spec
Add primitive compressor classes
Add DMG compressor and specs
Add TGZ compressor and specs
Add Null compressor and specs (default)
Add compression phase to Omnibus
Remove duplicate attr_reader
Add compressor implementation