5.0.0-alpha.0

• Fixes #235
• Removes BU Default Icons
• Adds FontAwesome Free and FontAwesome Brands
• Adds a new variable, $font-weight-icon, to control which set of FontAwesome icons loads
• $widget-title-link-after has been deprecated in favor of $widget-title-link-icon
• Removes pre-IE9 support for icons, per FontAwesome standard.
• Moves to Github Packages for releases.
• Renames tools-cgb to tools-webpack.
• Reorganizes foundation into burf-base, burf-theme, burf-tools, and a new burf-customizations
• Migrates the following partials from burf-theme to burf-customizations:
  • content/collapsibles;
  • content/courses;
  • profiles/profile-format-default;
  • profiles/profile-format-basic;
  • profiles/profile-format-advanced;
  • profiles/profile-format-mini;
  • content/slideshows;
  • calendar/widget-calendar;
  • calendar/calendar-picker;
  • layout/branding;
  • calendar/calendar-archive;
  • profiles/profile-archive;
  • calendar/calendar-single;
  • profiles/profile-single;
  • bulp/bulp-base;
• Migrates the following partials from burf-base to burf-customizations:
  • fonts;