old_contents: /**
  * Copyright 2012-2017, Plotly, Inc.
  * All rights reserved.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
  
  
  'use strict';
  
  module.exports = {
      circle: '●',
      'circle-open': '○',
      square: '■',
      'square-open': '□',
      diamond: '◆',
      'diamond-open': '◇',
      cross: '+',
      x: '❌',
      'triangle-up': '▲',
      'triangle-up-open': '△',
      'triangle-down': '▼',
      'triangle-down-open': '▽',
      'triangle-left': '◄',
      'triangle-left-open': '◁',
      'triangle-right': '►',
      'triangle-right-open': '▷',
      'triangle-ne': '◥',
      'triangle-ne-open': '◹',
      'triangle-nw': '◤',
      'triangle-nw-open': '◸',
      'triangle-se': '◢',
      'triangle-se-open': '◿',
      'triangle-sw': '◣',
      'triangle-sw-open': '◺',
      'pentagon': '⬟',
      'pentagon-open': '⬠',
      'hexagon': '⬢',
      'hexagon-open': '⬡',
      'hexagon2': '⬣',
      'star': '★',
      'star-open': '☆',
      'hexagram': '✶',
      'diamond-tall': '♦',
      'diamond-tall-open': '♢',
      'hourglass': '⧗',
      'hourglass-open': '⧖',
      'bowtie': '⧓',
      'bowtie-open': '⋈',
      'circle-cross': '⊕',
      'circle-x': '⊗',
      'square-cross': '⊞',
      'square-x': '⊠',
      'asterisk': '✱'
  };
  
new_contents: /**
  * Copyright 2012-2017, Plotly, Inc.
  * All rights reserved.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
  
  
  'use strict';
  
  module.exports = {
      'circle': '●',
      'circle-open': '○',
      'square': '■',
      'square-open': '□',
      'diamond': '◆',
      'diamond-open': '◇',
      'cross': '✚',
      'triangle-up': '▲',
      'triangle-up-open': '△',
      'triangle-down': '▼',
      'triangle-down-open': '▽',
      'triangle-left': '◄',
      'triangle-left-open': '◁',
      'triangle-right': '►',
      'triangle-right-open': '▷',
      'triangle-ne': '◥',
      'triangle-ne-open': '◹',
      'triangle-nw': '◤',
      'triangle-nw-open': '◸',
      'triangle-se': '◢',
      'triangle-se-open': '◿',
      'triangle-sw': '◣',
      'triangle-sw-open': '◺',
      'pentagon': '⬟',
      'pentagon-open': '⬠',
      'hexagon': '⬢',
      'hexagon-open': '⬡',
      'hexagon2': '⬣',
      'star': '★',
      'star-open': '☆',
      'diamond-tall': '♦',
      'diamond-tall-open': '♢',
      'diamond-wide': '▰',
      'diamond-wide-open': '▱',
      'bowtie': '⧓',
      'bowtie-open': '⋈',
      'circle-cross': '⨁',
      'circle-x': '⨂',
      'square-cross': '⊞',
      'square-x': '⊠',
      'diamond-cross': '⟠',
      'diamond-x': '❖',
      'cross-thin': '+',
      'cross-thin-open': '+',
      'x-thin': '╳',
      'x-thin-open': '╳',
      'asterisk': '✳',
      'asterisk-open': '✳',
      'y-up': '⅄',
      'y-up-open': '⅄',
      'y-down': 'Y',
      'y-down-open': 'Y',
      'y-left': '≺',
      'y-left-open': '≺',
      'y-right': '≻',
      'y-right-open': '≻',
      'line-ew': '─',
      'line-ew-open': '─',
      'line-ns': '│',
      'line-ns-open': '│',
      'line-ne': '╱',
      'line-ne-open': '╱',
      'line-nw': '╲',
      'line-nw-open': '╲'
  };
  
subject: update gl symbol list so that they all render in `imagetest` container