v2.y

• Added dark theme
• Added toggle switches
• Added support for date, date/time, month, telephone, time, and week inputs
• Added ripple around checkboxes and radio buttons
• Added full-width card class
• Added ability to set accent color via custom property
• Made more elements derive their theme colors from their colors
• Made unchecked checkboxes and radio buttons match their surrounding text color
• Disabled animations when prefers-reduced-motion is set to reduce
• Increased default card corner radius to 3px
• Slightly reduced padding on <select> drop-down arrows
• Fixed radio buttons, slider thumbs, and circular progress spinners appearing square on old Android browsers
• Removed Internet Explorer fallback lines from material-depth.css
• Removed suggestion to set circular progress spinners' border-top-colors
• Improved demo page (in addition to updating it to include the new features)