Version 1.0.4

• Adds --skip-copy flag to allow import of media from local filesystem without moving on disk [#21].
• Replicates wp_get_additional_image_sizes() for WP < 4.7. [#30].
• Updates package with latest scaffolded components [#32].
• Uses dist: precise for PHP 5.3, dist: trusty for everything else [#34].