diff --git a/package-lock.json b/package-lock.json
index 01322ae..8759104 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3015,7 +3015,8 @@
     "commander": {
       "version": "2.20.3",
       "resolved": "https://registry.npm.taobao.org/commander/download/commander-2.20.3.tgz",
-      "integrity": "sha1-/UhehMA+tIgcIHIrpIA16FMa6zM="
+      "integrity": "sha1-/UhehMA+tIgcIHIrpIA16FMa6zM=",
+      "dev": true
     },
     "commondir": {
       "version": "1.0.1",
@@ -3555,267 +3556,281 @@
       "dev": true
     },
     "d3": {
-      "version": "5.15.0",
-      "resolved": "https://registry.npmjs.org/d3/-/d3-5.15.0.tgz",
-      "integrity": "sha512-C+E80SL2nLLtmykZ6klwYj5rPqB5nlfN5LdWEAVdWPppqTD8taoJi2PxLZjPeYT8FFRR2yucXq+kBlOnnvZeLg==",
-      "requires": {
-        "d3-array": "1",
-        "d3-axis": "1",
-        "d3-brush": "1",
-        "d3-chord": "1",
-        "d3-collection": "1",
-        "d3-color": "1",
-        "d3-contour": "1",
-        "d3-dispatch": "1",
-        "d3-drag": "1",
-        "d3-dsv": "1",
-        "d3-ease": "1",
-        "d3-fetch": "1",
-        "d3-force": "1",
-        "d3-format": "1",
-        "d3-geo": "1",
-        "d3-hierarchy": "1",
-        "d3-interpolate": "1",
-        "d3-path": "1",
-        "d3-polygon": "1",
-        "d3-quadtree": "1",
-        "d3-random": "1",
-        "d3-scale": "2",
-        "d3-scale-chromatic": "1",
-        "d3-selection": "1",
-        "d3-shape": "1",
-        "d3-time": "1",
-        "d3-time-format": "2",
-        "d3-timer": "1",
-        "d3-transition": "1",
-        "d3-voronoi": "1",
-        "d3-zoom": "1"
+      "version": "7.6.1",
+      "resolved": "https://registry.npmjs.org/d3/-/d3-7.6.1.tgz",
+      "integrity": "sha512-txMTdIHFbcpLx+8a0IFhZsbp+PfBBPt8yfbmukZTQFroKuFqIwqswF0qE5JXWefylaAVpSXFoKm3yP+jpNLFLw==",
+      "requires": {
+        "d3-array": "3",
+        "d3-axis": "3",
+        "d3-brush": "3",
+        "d3-chord": "3",
+        "d3-color": "3",
+        "d3-contour": "4",
+        "d3-delaunay": "6",
+        "d3-dispatch": "3",
+        "d3-drag": "3",
+        "d3-dsv": "3",
+        "d3-ease": "3",
+        "d3-fetch": "3",
+        "d3-force": "3",
+        "d3-format": "3",
+        "d3-geo": "3",
+        "d3-hierarchy": "3",
+        "d3-interpolate": "3",
+        "d3-path": "3",
+        "d3-polygon": "3",
+        "d3-quadtree": "3",
+        "d3-random": "3",
+        "d3-scale": "4",
+        "d3-scale-chromatic": "3",
+        "d3-selection": "3",
+        "d3-shape": "3",
+        "d3-time": "3",
+        "d3-time-format": "4",
+        "d3-timer": "3",
+        "d3-transition": "3",
+        "d3-zoom": "3"
       }
     },
     "d3-array": {
-      "version": "1.2.4",
-      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-1.2.4.tgz",
-      "integrity": "sha512-KHW6M86R+FUPYGb3R5XiYjXPq7VzwxZ22buHhAEVG5ztoEcZZMLov530mmccaqA1GghZArjQV46fuc8kUqhhHw=="
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-3.2.0.tgz",
+      "integrity": "sha512-3yXFQo0oG3QCxbF06rMPFyGRMGJNS7NvsV1+2joOjbBE+9xvWQ8+GcMJAjRCzw06zQ3/arXeJgbPYcjUCuC+3g==",
+      "requires": {
+        "internmap": "1 - 2"
+      }
     },
     "d3-axis": {
-      "version": "1.0.12",
-      "resolved": "https://registry.npmjs.org/d3-axis/-/d3-axis-1.0.12.tgz",
-      "integrity": "sha512-ejINPfPSNdGFKEOAtnBtdkpr24c4d4jsei6Lg98mxf424ivoDP2956/5HDpIAtmHo85lqT4pruy+zEgvRUBqaQ=="
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/d3-axis/-/d3-axis-3.0.0.tgz",
+      "integrity": "sha512-IH5tgjV4jE/GhHkRV0HiVYPDtvfjHQlQfJHs0usq7M30XcSBvOotpmH1IgkcXsO/5gEQZD43B//fc7SRT5S+xw=="
     },
     "d3-brush": {
-      "version": "1.1.5",
-      "resolved": "https://registry.npmjs.org/d3-brush/-/d3-brush-1.1.5.tgz",
-      "integrity": "sha512-rEaJ5gHlgLxXugWjIkolTA0OyMvw8UWU1imYXy1v642XyyswmI1ybKOv05Ft+ewq+TFmdliD3VuK0pRp1VT/5A==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/d3-brush/-/d3-brush-3.0.0.tgz",
+      "integrity": "sha512-ALnjWlVYkXsVIGlOsuWH1+3udkYFI48Ljihfnh8FZPF2QS9o+PzGLBslO0PjzVoHLZ2KCVgAM8NVkXPJB2aNnQ==",
       "requires": {
-        "d3-dispatch": "1",
-        "d3-drag": "1",
-        "d3-interpolate": "1",
-        "d3-selection": "1",
-        "d3-transition": "1"
+        "d3-dispatch": "1 - 3",
+        "d3-drag": "2 - 3",
+        "d3-interpolate": "1 - 3",
+        "d3-selection": "3",
+        "d3-transition": "3"
       }
     },
     "d3-chord": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/d3-chord/-/d3-chord-1.0.6.tgz",
-      "integrity": "sha512-JXA2Dro1Fxw9rJe33Uv+Ckr5IrAa74TlfDEhE/jfLOaXegMQFQTAgAw9WnZL8+HxVBRXaRGCkrNU7pJeylRIuA==",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-chord/-/d3-chord-3.0.1.tgz",
+      "integrity": "sha512-VE5S6TNa+j8msksl7HwjxMHDM2yNK3XCkusIlpX5kwauBfXuyLAtNg9jCp/iHH61tgI4sb6R/EIMWCqEIdjT/g==",
       "requires": {
-        "d3-array": "1",
-        "d3-path": "1"
+        "d3-path": "1 - 3"
       }
     },
-    "d3-collection": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/d3-collection/-/d3-collection-1.0.7.tgz",
-      "integrity": "sha512-ii0/r5f4sjKNTfh84Di+DpztYwqKhEyUlKoPrzUFfeSkWxjW49xU2QzO9qrPrNkpdI0XJkfzvmTu8V2Zylln6A=="
-    },
     "d3-color": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/d3-color/-/d3-color-1.4.0.tgz",
-      "integrity": "sha512-TzNPeJy2+iEepfiL92LAAB7fvnp/dV2YwANPVHdDWmYMm23qIJBYww3qT8I8C1wXrmrg4UWs7BKc2tKIgyjzHg=="
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/d3-color/-/d3-color-3.1.0.tgz",
+      "integrity": "sha512-zg/chbXyeBtMQ1LbD/WSoW2DpC3I0mpmPdW+ynRTj/x2DAWYrIY7qeZIHidozwV24m4iavr15lNwIwLxRmOxhA=="
     },
     "d3-contour": {
-      "version": "1.3.2",
-      "resolved": "https://registry.npmjs.org/d3-contour/-/d3-contour-1.3.2.tgz",
-      "integrity": "sha512-hoPp4K/rJCu0ladiH6zmJUEz6+u3lgR+GSm/QdM2BBvDraU39Vr7YdDCicJcxP1z8i9B/2dJLgDC1NcvlF8WCg==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/d3-contour/-/d3-contour-4.0.0.tgz",
+      "integrity": "sha512-7aQo0QHUTu/Ko3cP9YK9yUTxtoDEiDGwnBHyLxG5M4vqlBkO/uixMRele3nfsfj6UXOcuReVpVXzAboGraYIJw==",
       "requires": {
-        "d3-array": "^1.1.1"
+        "d3-array": "^3.2.0"
+      }
+    },
+    "d3-delaunay": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/d3-delaunay/-/d3-delaunay-6.0.2.tgz",
+      "integrity": "sha512-IMLNldruDQScrcfT+MWnazhHbDJhcRJyOEBAJfwQnHle1RPh6WDuLvxNArUju2VSMSUuKlY5BGHRJ2cYyoFLQQ==",
+      "requires": {
+        "delaunator": "5"
       }
     },
     "d3-dispatch": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/d3-dispatch/-/d3-dispatch-1.0.6.tgz",
-      "integrity": "sha512-fVjoElzjhCEy+Hbn8KygnmMS7Or0a9sI2UzGwoB7cCtvI1XpVN9GpoYlnb3xt2YV66oXYb1fLJ8GMvP4hdU1RA=="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-dispatch/-/d3-dispatch-3.0.1.tgz",
+      "integrity": "sha512-rzUyPU/S7rwUflMyLc1ETDeBj0NRuHKKAcvukozwhshr6g6c5d8zh4c2gQjY2bZ0dXeGLWc1PF174P2tVvKhfg=="
     },
     "d3-drag": {
-      "version": "1.2.5",
-      "resolved": "https://registry.npmjs.org/d3-drag/-/d3-drag-1.2.5.tgz",
-      "integrity": "sha512-rD1ohlkKQwMZYkQlYVCrSFxsWPzI97+W+PaEIBNTMxRuxz9RF0Hi5nJWHGVJ3Om9d2fRTe1yOBINJyy/ahV95w==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/d3-drag/-/d3-drag-3.0.0.tgz",
+      "integrity": "sha512-pWbUJLdETVA8lQNJecMxoXfH6x+mO2UQo8rSmZ+QqxcbyA3hfeprFgIT//HW2nlHChWeIIMwS2Fq+gEARkhTkg==",
       "requires": {
-        "d3-dispatch": "1",
-        "d3-selection": "1"
+        "d3-dispatch": "1 - 3",
+        "d3-selection": "3"
       }
     },
     "d3-dsv": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/d3-dsv/-/d3-dsv-1.2.0.tgz",
-      "integrity": "sha512-9yVlqvZcSOMhCYzniHE7EVUws7Fa1zgw+/EAV2BxJoG3ME19V6BQFBwI855XQDsxyOuG7NibqRMTtiF/Qup46g==",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-dsv/-/d3-dsv-3.0.1.tgz",
+      "integrity": "sha512-UG6OvdI5afDIFP9w4G0mNq50dSOsXHJaRE8arAS5o9ApWnIElp8GZw1Dun8vP8OyHOZ/QJUKUJwxiiCCnUwm+Q==",
       "requires": {
-        "commander": "2",
-        "iconv-lite": "0.4",
+        "commander": "7",
+        "iconv-lite": "0.6",
         "rw": "1"
+      },
+      "dependencies": {
+        "commander": {
+          "version": "7.2.0",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-7.2.0.tgz",
+          "integrity": "sha512-QrWXB+ZQSVPmIWIhtEO9H+gwHaMGYiF5ChvoJ+K9ZGHG/sVsa6yiesAD1GC/x46sET00Xlwo1u49RVVVzvcSkw=="
+        },
+        "iconv-lite": {
+          "version": "0.6.3",
+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
+          "integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
+          "requires": {
+            "safer-buffer": ">= 2.1.2 < 3.0.0"
+          }
+        }
       }
     },
     "d3-ease": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/d3-ease/-/d3-ease-1.0.6.tgz",
-      "integrity": "sha512-SZ/lVU7LRXafqp7XtIcBdxnWl8yyLpgOmzAk0mWBI9gXNzLDx5ybZgnRbH9dN/yY5tzVBqCQ9avltSnqVwessQ=="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-ease/-/d3-ease-3.0.1.tgz",
+      "integrity": "sha512-wR/XK3D3XcLIZwpbvQwQ5fK+8Ykds1ip7A2Txe0yxncXSdq1L9skcG7blcedkOX+ZcgxGAmLX1FrRGbADwzi0w=="
     },
     "d3-fetch": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/d3-fetch/-/d3-fetch-1.1.2.tgz",
-      "integrity": "sha512-S2loaQCV/ZeyTyIF2oP8D1K9Z4QizUzW7cWeAOAS4U88qOt3Ucf6GsmgthuYSdyB2HyEm4CeGvkQxWsmInsIVA==",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-fetch/-/d3-fetch-3.0.1.tgz",
+      "integrity": "sha512-kpkQIM20n3oLVBKGg6oHrUchHM3xODkTzjMoj7aWQFq5QEM+R6E4WkzT5+tojDY7yjez8KgCBRoj4aEr99Fdqw==",
       "requires": {
-        "d3-dsv": "1"
+        "d3-dsv": "1 - 3"
       }
     },
     "d3-force": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/d3-force/-/d3-force-1.2.1.tgz",
-      "integrity": "sha512-HHvehyaiUlVo5CxBJ0yF/xny4xoaxFxDnBXNvNcfW9adORGZfyNF1dj6DGLKyk4Yh3brP/1h3rnDzdIAwL08zg==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/d3-force/-/d3-force-3.0.0.tgz",
+      "integrity": "sha512-zxV/SsA+U4yte8051P4ECydjD/S+qeYtnaIyAs9tgHCqfguma/aAQDjo85A9Z6EKhBirHRJHXIgJUlffT4wdLg==",
       "requires": {
-        "d3-collection": "1",
-        "d3-dispatch": "1",
-        "d3-quadtree": "1",
-        "d3-timer": "1"
+        "d3-dispatch": "1 - 3",
+        "d3-quadtree": "1 - 3",
+        "d3-timer": "1 - 3"
       }
     },
     "d3-format": {
-      "version": "1.4.3",
-      "resolved": "https://registry.npmjs.org/d3-format/-/d3-format-1.4.3.tgz",
-      "integrity": "sha512-mm/nE2Y9HgGyjP+rKIekeITVgBtX97o1nrvHCWX8F/yBYyevUTvu9vb5pUnKwrcSw7o7GuwMOWjS9gFDs4O+uQ=="
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/d3-format/-/d3-format-3.1.0.tgz",
+      "integrity": "sha512-YyUI6AEuY/Wpt8KWLgZHsIU86atmikuoOmCfommt0LYHiQSPjvX2AcFc38PX0CBpr2RCyZhjex+NS/LPOv6YqA=="
     },
     "d3-geo": {
-      "version": "1.11.9",
-      "resolved": "https://registry.npmjs.org/d3-geo/-/d3-geo-1.11.9.tgz",
-      "integrity": "sha512-9edcH6J3s/Aa3KJITWqFJbyB/8q3mMlA9Fi7z6yy+FAYMnRaxmC7jBhUnsINxVWD14GmqX3DK8uk7nV6/Ekt4A==",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-geo/-/d3-geo-3.0.1.tgz",
+      "integrity": "sha512-Wt23xBych5tSy9IYAM1FR2rWIBFWa52B/oF/GYe5zbdHrg08FU8+BuI6X4PvTwPDdqdAdq04fuWJpELtsaEjeA==",
       "requires": {
-        "d3-array": "1"
+        "d3-array": "2.5.0 - 3"
       }
     },
     "d3-hierarchy": {
-      "version": "1.1.9",
-      "resolved": "https://registry.npmjs.org/d3-hierarchy/-/d3-hierarchy-1.1.9.tgz",
-      "integrity": "sha512-j8tPxlqh1srJHAtxfvOUwKNYJkQuBFdM1+JAUfq6xqH5eAqf93L7oG1NVqDa4CpFZNvnNKtCYEUC8KY9yEn9lQ=="
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/d3-hierarchy/-/d3-hierarchy-3.1.2.tgz",
+      "integrity": "sha512-FX/9frcub54beBdugHjDCdikxThEqjnR93Qt7PvQTOHxyiNCAlvMrHhclk3cD5VeAaq9fxmfRp+CnWw9rEMBuA=="
     },
     "d3-interpolate": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/d3-interpolate/-/d3-interpolate-1.4.0.tgz",
-      "integrity": "sha512-V9znK0zc3jOPV4VD2zZn0sDhZU3WAE2bmlxdIwwQPPzPjvyLkd8B3JUVdS1IDUFDkWZ72c9qnv1GK2ZagTZ8EA==",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-interpolate/-/d3-interpolate-3.0.1.tgz",
+      "integrity": "sha512-3bYs1rOD33uo8aqJfKP3JWPAibgw8Zm2+L9vBKEHJ2Rg+viTR7o5Mmv5mZcieN+FRYaAOWX5SJATX6k1PWz72g==",
       "requires": {
-        "d3-color": "1"
+        "d3-color": "1 - 3"
       }
     },
     "d3-path": {
-      "version": "1.0.9",
-      "resolved": "https://registry.npmjs.org/d3-path/-/d3-path-1.0.9.tgz",
-      "integrity": "sha512-VLaYcn81dtHVTjEHd8B+pbe9yHWpXKZUC87PzoFmsFrJqgFwDe/qxfp5MlfsfM1V5E/iVt0MmEbWQ7FVIXh/bg=="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-path/-/d3-path-3.0.1.tgz",
+      "integrity": "sha512-gq6gZom9AFZby0YLduxT1qmrp4xpBA1YZr19OI717WIdKE2OM5ETq5qrHLb301IgxhLwcuxvGZVLeeWc/k1I6w=="
     },
     "d3-polygon": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/d3-polygon/-/d3-polygon-1.0.6.tgz",
-      "integrity": "sha512-k+RF7WvI08PC8reEoXa/w2nSg5AUMTi+peBD9cmFc+0ixHfbs4QmxxkarVal1IkVkgxVuk9JSHhJURHiyHKAuQ=="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-polygon/-/d3-polygon-3.0.1.tgz",
+      "integrity": "sha512-3vbA7vXYwfe1SYhED++fPUQlWSYTTGmFmQiany/gdbiWgU/iEyQzyymwL9SkJjFFuCS4902BSzewVGsHHmHtXg=="
     },
     "d3-quadtree": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/d3-quadtree/-/d3-quadtree-1.0.7.tgz",
-      "integrity": "sha512-RKPAeXnkC59IDGD0Wu5mANy0Q2V28L+fNe65pOCXVdVuTJS3WPKaJlFHer32Rbh9gIo9qMuJXio8ra4+YmIymA=="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-quadtree/-/d3-quadtree-3.0.1.tgz",
+      "integrity": "sha512-04xDrxQTDTCFwP5H6hRhsRcb9xxv2RzkcsygFzmkSIOJy3PeRJP7sNk3VRIbKXcog561P9oU0/rVH6vDROAgUw=="
     },
     "d3-random": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/d3-random/-/d3-random-1.1.2.tgz",
-      "integrity": "sha512-6AK5BNpIFqP+cx/sreKzNjWbwZQCSUatxq+pPRmFIQaWuoD+NrbVWw7YWpHiXpCQ/NanKdtGDuB+VQcZDaEmYQ=="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-random/-/d3-random-3.0.1.tgz",
+      "integrity": "sha512-FXMe9GfxTxqd5D6jFsQ+DJ8BJS4E/fT5mqqdjovykEB2oFbTMDVdg1MGFxfQW+FBOGoB++k8swBrgwSHT1cUXQ=="
     },
     "d3-scale": {
-      "version": "2.2.2",
-      "resolved": "https://registry.npmjs.org/d3-scale/-/d3-scale-2.2.2.tgz",
-      "integrity": "sha512-LbeEvGgIb8UMcAa0EATLNX0lelKWGYDQiPdHj+gLblGVhGLyNbaCn3EvrJf0A3Y/uOOU5aD6MTh5ZFCdEwGiCw==",
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/d3-scale/-/d3-scale-4.0.2.tgz",
+      "integrity": "sha512-GZW464g1SH7ag3Y7hXjf8RoUuAFIqklOAq3MRl4OaWabTFJY9PN/E1YklhXLh+OQ3fM9yS2nOkCoS+WLZ6kvxQ==",
       "requires": {
-        "d3-array": "^1.2.0",
-        "d3-collection": "1",
-        "d3-format": "1",
-        "d3-interpolate": "1",
-        "d3-time": "1",
-        "d3-time-format": "2"
+        "d3-array": "2.10.0 - 3",
+        "d3-format": "1 - 3",
+        "d3-interpolate": "1.2.0 - 3",
+        "d3-time": "2.1.1 - 3",
+        "d3-time-format": "2 - 4"
       }
     },
     "d3-scale-chromatic": {
-      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/d3-scale-chromatic/-/d3-scale-chromatic-1.5.0.tgz",
-      "integrity": "sha512-ACcL46DYImpRFMBcpk9HhtIyC7bTBR4fNOPxwVSl0LfulDAwyiHyPOTqcDG1+t5d4P9W7t/2NAuWu59aKko/cg==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/d3-scale-chromatic/-/d3-scale-chromatic-3.0.0.tgz",
+      "integrity": "sha512-Lx9thtxAKrO2Pq6OO2Ua474opeziKr279P/TKZsMAhYyNDD3EnCffdbgeSYN5O7m2ByQsxtuP2CSDczNUIZ22g==",
       "requires": {
-        "d3-color": "1",
-        "d3-interpolate": "1"
+        "d3-color": "1 - 3",
+        "d3-interpolate": "1 - 3"
       }
     },
     "d3-selection": {
-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/d3-selection/-/d3-selection-1.4.1.tgz",
-      "integrity": "sha512-BTIbRjv/m5rcVTfBs4AMBLKs4x8XaaLkwm28KWu9S2vKNqXkXt2AH2Qf0sdPZHjFxcWg/YL53zcqAz+3g4/7PA=="
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/d3-selection/-/d3-selection-3.0.0.tgz",
+      "integrity": "sha512-fmTRWbNMmsmWq6xJV8D19U/gw/bwrHfNXxrIN+HfZgnzqTHp9jOmKMhsTUjXOJnZOdZY9Q28y4yebKzqDKlxlQ=="
     },
     "d3-shape": {
-      "version": "1.3.7",
-      "resolved": "https://registry.npmjs.org/d3-shape/-/d3-shape-1.3.7.tgz",
-      "integrity": "sha512-EUkvKjqPFUAZyOlhY5gzCxCeI0Aep04LwIRpsZ/mLFelJiUfnK56jo5JMDSE7yyP2kLSb6LtF+S5chMk7uqPqw==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/d3-shape/-/d3-shape-3.1.0.tgz",
+      "integrity": "sha512-tGDh1Muf8kWjEDT/LswZJ8WF85yDZLvVJpYU9Nq+8+yW1Z5enxrmXOhTArlkaElU+CTn0OTVNli+/i+HP45QEQ==",
       "requires": {
-        "d3-path": "1"
+        "d3-path": "1 - 3"
       }
     },
     "d3-time": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/d3-time/-/d3-time-1.1.0.tgz",
-      "integrity": "sha512-Xh0isrZ5rPYYdqhAVk8VLnMEidhz5aP7htAADH6MfzgmmicPkTo8LhkLxci61/lCB7n7UmE3bN0leRt+qvkLxA=="
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/d3-time/-/d3-time-3.0.0.tgz",
+      "integrity": "sha512-zmV3lRnlaLI08y9IMRXSDshQb5Nj77smnfpnd2LrBa/2K281Jijactokeak14QacHs/kKq0AQ121nidNYlarbQ==",
+      "requires": {
+        "d3-array": "2 - 3"
+      }
     },
     "d3-time-format": {
-      "version": "2.2.3",
-      "resolved": "https://registry.npmjs.org/d3-time-format/-/d3-time-format-2.2.3.tgz",
-      "integrity": "sha512-RAHNnD8+XvC4Zc4d2A56Uw0yJoM7bsvOlJR33bclxq399Rak/b9bhvu/InjxdWhPtkgU53JJcleJTGkNRnN6IA==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/d3-time-format/-/d3-time-format-4.1.0.tgz",
+      "integrity": "sha512-dJxPBlzC7NugB2PDLwo9Q8JiTR3M3e4/XANkreKSUxF8vvXKqm1Yfq4Q5dl8budlunRVlUUaDUgFt7eA8D6NLg==",
       "requires": {
-        "d3-time": "1"
+        "d3-time": "1 - 3"
       }
     },
     "d3-timer": {
-      "version": "1.0.10",
-      "resolved": "https://registry.npmjs.org/d3-timer/-/d3-timer-1.0.10.tgz",
-      "integrity": "sha512-B1JDm0XDaQC+uvo4DT79H0XmBskgS3l6Ve+1SBCfxgmtIb1AVrPIoqd+nPSv+loMX8szQ0sVUhGngL7D5QPiXw=="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-timer/-/d3-timer-3.0.1.tgz",
+      "integrity": "sha512-ndfJ/JxxMd3nw31uyKoY2naivF+r29V+Lc0svZxe1JvvIRmi8hUsrMvdOwgS1o6uBHmiz91geQ0ylPP0aj1VUA=="
     },
     "d3-transition": {
-      "version": "1.3.2",
-      "resolved": "https://registry.npmjs.org/d3-transition/-/d3-transition-1.3.2.tgz",
-      "integrity": "sha512-sc0gRU4PFqZ47lPVHloMn9tlPcv8jxgOQg+0zjhfZXMQuvppjG6YuwdMBE0TuqCZjeJkLecku/l9R0JPcRhaDA==",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-transition/-/d3-transition-3.0.1.tgz",
+      "integrity": "sha512-ApKvfjsSR6tg06xrL434C0WydLr7JewBB3V+/39RMHsaXTOG0zmt/OAXeng5M5LBm0ojmxJrpomQVZ1aPvBL4w==",
       "requires": {
-        "d3-color": "1",
-        "d3-dispatch": "1",
-        "d3-ease": "1",
-        "d3-interpolate": "1",
-        "d3-selection": "^1.1.0",
-        "d3-timer": "1"
+        "d3-color": "1 - 3",
+        "d3-dispatch": "1 - 3",
+        "d3-ease": "1 - 3",
+        "d3-interpolate": "1 - 3",
+        "d3-timer": "1 - 3"
       }
     },
-    "d3-voronoi": {
-      "version": "1.1.4",
-      "resolved": "https://registry.npmjs.org/d3-voronoi/-/d3-voronoi-1.1.4.tgz",
-      "integrity": "sha512-dArJ32hchFsrQ8uMiTBLq256MpnZjeuBtdHpaDlYuQyjU0CVzCJl/BVW+SkszaAeH95D/8gxqAhgx0ouAWAfRg=="
-    },
     "d3-zoom": {
-      "version": "1.8.3",
-      "resolved": "https://registry.npmjs.org/d3-zoom/-/d3-zoom-1.8.3.tgz",
-      "integrity": "sha512-VoLXTK4wvy1a0JpH2Il+F2CiOhVu7VRXWF5M/LroMIh3/zBAC3WAt7QoIvPibOavVo20hN6/37vwAsdBejLyKQ==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/d3-zoom/-/d3-zoom-3.0.0.tgz",
+      "integrity": "sha512-b8AmV3kfQaqWAuacbPuNbL6vahnOJflOhexLzMMNLga62+/nh0JzvJ0aO/5a5MVgUFGS7Hu1P9P03o3fJkDCyw==",
       "requires": {
-        "d3-dispatch": "1",
-        "d3-drag": "1",
-        "d3-interpolate": "1",
-        "d3-selection": "1",
-        "d3-transition": "1"
+        "d3-dispatch": "1 - 3",
+        "d3-drag": "2 - 3",
+        "d3-interpolate": "1 - 3",
+        "d3-selection": "2 - 3",
+        "d3-transition": "2 - 3"
       }
     },
     "dashdash": {
@@ -4098,6 +4113,14 @@
         }
       }
     },
+    "delaunator": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/delaunator/-/delaunator-5.0.0.tgz",
+      "integrity": "sha512-AyLvtyJdbv/U1GkiS6gUUzclRoAY4Gs75qkMygJJhU75LW4DNuSF2RMzpxs9jw9Oz1BobHjTdkG3zdP55VxAqw==",
+      "requires": {
+        "robust-predicates": "^3.0.0"
+      }
+    },
     "delayed-stream": {
       "version": "1.0.0",
       "resolved": "https://registry.npm.taobao.org/delayed-stream/download/delayed-stream-1.0.0.tgz",
@@ -6332,6 +6355,7 @@
       "version": "0.4.24",
       "resolved": "https://registry.npm.taobao.org/iconv-lite/download/iconv-lite-0.4.24.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Ficonv-lite%2Fdownload%2Ficonv-lite-0.4.24.tgz",
       "integrity": "sha1-ICK0sl+93CHS9SSXSkdKr+czkIs=",
+      "dev": true,
       "requires": {
         "safer-buffer": ">= 2.1.2 < 3"
       }
@@ -6495,6 +6519,11 @@
         }
       }
     },
+    "internmap": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/internmap/-/internmap-2.0.3.tgz",
+      "integrity": "sha512-5Hh7Y1wQbvY5ooGgPbDaL5iYLAPzMTUrjMulskHLH6wnv/A+1q5rgEaiuqEjB+oxGXIVZs1FF+R/KPN3ZSQYYg=="
+    },
     "intersection-observer": {
       "version": "0.7.0",
       "resolved": "https://registry.npmjs.org/intersection-observer/-/intersection-observer-0.7.0.tgz",
@@ -9474,6 +9503,11 @@
         "inherits": "^2.0.1"
       }
     },
+    "robust-predicates": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/robust-predicates/-/robust-predicates-3.0.1.tgz",
+      "integrity": "sha512-ndEIpszUHiG4HtDsQLeIuMvRsDnn8c8rYStabochtUeCvfuvNptb5TUbVD68LRAILPX7p9nqQGh4xJgn3EHS/g=="
+    },
     "run-async": {
       "version": "2.3.0",
       "resolved": "https://registry.npm.taobao.org/run-async/download/run-async-2.3.0.tgz",
@@ -9495,7 +9529,7 @@
     "rw": {
       "version": "1.3.3",
       "resolved": "https://registry.npmjs.org/rw/-/rw-1.3.3.tgz",
-      "integrity": "sha1-P4Yt+pGrdmsUiF700BEkv9oHT7Q="
+      "integrity": "sha512-PdhdWy89SiZogBLaw42zdeqtRJ//zFd2PgQavcICDUgJT5oW10QCRKbJ6bg4r0/UY2M6BWd5tkxuGFRvCkgfHQ=="
     },
     "rxjs": {
       "version": "6.5.4",
diff --git a/package.json b/package.json
index ad908e1..6d66c32 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
   },
   "dependencies": {
     "core-js": "^3.4.4",
-    "d3": "^5.15.0",
+    "d3": "^7.6.1",
     "intersection-observer": "^0.7.0",
     "scrollama": "^2.1.4",
     "vue": "^2.6.10"