Adding a check for $container-max-width. If it is set to "none," then no {max-width:…} is emitted to the CSS.
Removing mid-width of 320px on <body>. This is handled in the ie-snap file, since it only pertains to Windows 8 in Metro mode.
Fixing a scoping issue, with the generated ie.css file. To keep it consistent, made all imports of the "base" styles be @media all, instead of @media screen. Result: Slightly nicer linearized print view (with appropriate padding, etc).