Updates  to version 0.3.1
Updates  to version 0.3.1

Change-Id: If6c866e36c603e36f34201f61aef42123b593e95

ampproject/amp-toolbox,ampproject/amp-toolbox,google/amp-toolbox,ampproject/amp-toolbox,google/amp-toolbox,google/amp-toolbox,ampproject/amp-toolbox