Major Changes

• Remove eot font files as they are only required for IE6-8
• Remove ttf and otf font files as woff2 and woff font files should be enough for modern browsers
• Rename font files to match their CSS class names (MaterialIconsOutlined-Regular → material-icons-outlined)
• Refactor Sass mixins and remove unused Sass variables ($material-icons-font-name, $material-icons-font-family)

Other Changes

• Delete unused svg font file
• Remove local() font references in css as they may cause issues with locally installed fonts
• Add files field to package.json to include only css, scss and font files in package
• Switch to dart-sass as node-sass is deprecated
• Update fonts and codepoints
• Add airline_stops, airlines, apps_outage, browser_updated, connecting_airports, expand_circle_down, flight_class, interests, mode_of_travel, soup_kitchen icons