Prepare the 1.0.0 release.
Merge pull request #71 from apenney/100-release

Prepare the 1.0.0 release.
fix panic parameter in virtual machines

As facts are always strings, quoting is required here.
Correct deprecation notice to mention 'package_ensure'
Merge pull request #72 from mmoll/virtual_panic

fix panic parameter in virtual machines
Merge pull request #73 from gwis/update-deprecation-notice

Correct deprecation notice to mention 'package_ensure'