Eleventy Font Awesome v1.0.0-beta.7

• Fixes bug with importing other Font Awesome icon sets via sets plugin option #1
• Adds support for <i class="fa-fw"> for fixed width icons.
• Improves error messaging when an icon can’t be found.

v1 Milestone: https://github.com/11ty/eleventy-plugin-font-awesome/milestone/1?closed=1
Full Changelog: v1.0.0-beta.6...v1.0.0-beta.7