>Sun</li>
                <li>Mon</li>
                <li>Tue</li>
                <li>Wed</li>
                <li>Thu</li>
                <li>Fri</li>
                <li>Sat</li>
              </ul>
              <ul class="squares">
                <template is="dom-repeat" items="{{commitData}}">
                  <li class="tooltip" data-level$="[[item.level]]">
                    <span class="tooltiptext">[[item.commit]] commits on [[item.date]]</span>
                  </li>
                </tem