diff --git a/package-lock.json b/package-lock.json
index 8d83265..bd8f7d9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2795,7 +2795,8 @@
     "commander": {
       "version": "2.15.1",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.15.1.tgz",
-      "integrity": "sha1-30boZ9D8Kuxmo0ZitAapzK//Ww8="
+      "integrity": "sha1-30boZ9D8Kuxmo0ZitAapzK//Ww8=",
+      "dev": true
     },
     "common-tags": {
       "version": "1.7.2",
@@ -3263,72 +3264,87 @@
       }
     },
     "d3": {
-      "version": "5.1.0",
-      "resolved": "https://registry.npmjs.org/d3/-/d3-5.1.0.tgz",
-      "integrity": "sha512-2ltUUsAuolg5+AfgRBkZBFOUcR+UsWc2vAixBSiw6cFqdSCEufPavYI6lPdL68dgNOaMp4sggwJ3BnJElm7tyQ==",
-      "requires": {
-        "d3-array": "1.2.1",
-        "d3-axis": "1.0.8",
-        "d3-brush": "1.0.4",
-        "d3-chord": "1.0.4",
-        "d3-collection": "1.0.4",
-        "d3-color": "1.1.0",
-        "d3-contour": "1.2.0",
-        "d3-dispatch": "1.0.3",
-        "d3-drag": "1.2.1",
-        "d3-dsv": "1.0.8",
-        "d3-ease": "1.0.3",
-        "d3-fetch": "1.1.0",
-        "d3-force": "1.1.0",
-        "d3-format": "1.2.2",
-        "d3-geo": "1.10.0",
-        "d3-hierarchy": "1.1.6",
-        "d3-interpolate": "1.1.6",
-        "d3-path": "1.0.5",
-        "d3-polygon": "1.0.3",
-        "d3-quadtree": "1.0.3",
-        "d3-random": "1.1.0",
-        "d3-scale": "2.0.0",
-        "d3-scale-chromatic": "1.2.0",
-        "d3-selection": "1.3.0",
-        "d3-shape": "1.2.0",
-        "d3-time": "1.0.8",
-        "d3-time-format": "2.1.1",
-        "d3-timer": "1.0.7",
-        "d3-transition": "1.1.1",
-        "d3-voronoi": "1.1.2",
-        "d3-zoom": "1.7.1"
+      "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"
+      },
+      "dependencies": {
+        "d3-selection": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/d3-selection/-/d3-selection-3.0.0.tgz",
+          "integrity": "sha512-fmTRWbNMmsmWq6xJV8D19U/gw/bwrHfNXxrIN+HfZgnzqTHp9jOmKMhsTUjXOJnZOdZY9Q28y4yebKzqDKlxlQ=="
+        }
       }
     },
     "d3-array": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-1.2.1.tgz",
-      "integrity": "sha1-0coz3i9qwx76244FCgIdfiOW1dw="
+      "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": "1.0.8",
-      "resolved": "https://registry.npmjs.org/d3-axis/-/d3-axis-1.0.8.tgz",
-      "integrity": "sha1-MacFoLU15ldZ3hQXOjGTMTfxjvo="
+      "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": "1.0.4",
-      "resolved": "https://registry.npmjs.org/d3-brush/-/d3-brush-1.0.4.tgz",
-      "integrity": "sha1-AMLyOAGfJPbAoZSibUGhUw/+e8Q=",
+      "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": "1.0.3",
-        "d3-drag": "1.2.1",
-        "d3-interpolate": "1.1.6",
-        "d3-selection": "1.3.0",
-        "d3-transition": "1.1.1"
+        "d3-dispatch": "1 - 3",
+        "d3-drag": "2 - 3",
+        "d3-interpolate": "1 - 3",
+        "d3-selection": "3",
+        "d3-transition": "3"
+      },
+      "dependencies": {
+        "d3-selection": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/d3-selection/-/d3-selection-3.0.0.tgz",
+          "integrity": "sha512-fmTRWbNMmsmWq6xJV8D19U/gw/bwrHfNXxrIN+HfZgnzqTHp9jOmKMhsTUjXOJnZOdZY9Q28y4yebKzqDKlxlQ=="
+        }
       }
     },
     "d3-chord": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/d3-chord/-/d3-chord-1.0.4.tgz",
-      "integrity": "sha1-fexPC6iG9xP+ERxF92NBT290yiw=",
+      "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": "1.2.1",
-        "d3-path": "1.0.5"
+        "d3-path": "1 - 3"
       }
     },
     "d3-collection": {
@@ -3337,132 +3353,160 @@
       "integrity": "sha1-NC39EoN8kJdPM/HMCnha6lcNzcI="
     },
     "d3-color": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/d3-color/-/d3-color-1.1.0.tgz",
-      "integrity": "sha512-IZVcqX5yYFvR2NUBbSfIfbgNcSgAtZ7JbgQWqDXf4CywtN7agvI7Kw6+Q1ETvlHOHWJT55Kyuzt0C3I0GVtRHQ=="
+      "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": "1.2.0",
-      "resolved": "https://registry.npmjs.org/d3-contour/-/d3-contour-1.2.0.tgz",
-      "integrity": "sha1-3j6nmRu7ZSFV7iqAOur9CEvgO2M=",
+      "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": "^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": {
-        "d3-array": "1.2.1"
+        "delaunator": "5"
       }
     },
     "d3-dispatch": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/d3-dispatch/-/d3-dispatch-1.0.3.tgz",
-      "integrity": "sha1-RuFJHqqbWMNY/OW+TovtYm54cfg="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-dispatch/-/d3-dispatch-3.0.1.tgz",
+      "integrity": "sha512-rzUyPU/S7rwUflMyLc1ETDeBj0NRuHKKAcvukozwhshr6g6c5d8zh4c2gQjY2bZ0dXeGLWc1PF174P2tVvKhfg=="
     },
     "d3-drag": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/d3-drag/-/d3-drag-1.2.1.tgz",
-      "integrity": "sha1-343UxQL7SQ/HRiBGqK2YpcR5KC0=",
+      "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": "1.0.3",
-        "d3-selection": "1.3.0"
+        "d3-dispatch": "1 - 3",
+        "d3-selection": "3"
+      },
+      "dependencies": {
+        "d3-selection": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/d3-selection/-/d3-selection-3.0.0.tgz",
+          "integrity": "sha512-fmTRWbNMmsmWq6xJV8D19U/gw/bwrHfNXxrIN+HfZgnzqTHp9jOmKMhsTUjXOJnZOdZY9Q28y4yebKzqDKlxlQ=="
+        }
       }
     },
     "d3-dsv": {
-      "version": "1.0.8",
-      "resolved": "https://registry.npmjs.org/d3-dsv/-/d3-dsv-1.0.8.tgz",
-      "integrity": "sha1-kH4kDVezhmGNxWRous/na/GXZK4=",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-dsv/-/d3-dsv-3.0.1.tgz",
+      "integrity": "sha512-UG6OvdI5afDIFP9w4G0mNq50dSOsXHJaRE8arAS5o9ApWnIElp8GZw1Dun8vP8OyHOZ/QJUKUJwxiiCCnUwm+Q==",
       "requires": {
-        "commander": "2.15.1",
-        "iconv-lite": "0.4.19",
-        "rw": "1.3.3"
+        "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": "1.0.3",
-      "resolved": "https://registry.npmjs.org/d3-ease/-/d3-ease-1.0.3.tgz",
-      "integrity": "sha1-aL+8NJM4o4DETYrMT7wzBKotjA4="
+      "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": "1.1.0",
-      "resolved": "https://registry.npmjs.org/d3-fetch/-/d3-fetch-1.1.0.tgz",
-      "integrity": "sha1-McvNUGsh1lGaxqEgoHnejQpXwA8=",
+      "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": "1.0.8"
+        "d3-dsv": "1 - 3"
       }
     },
     "d3-force": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/d3-force/-/d3-force-1.1.0.tgz",
-      "integrity": "sha1-zr88aU8QePzD1Nr45Wey+9cNTqM=",
+      "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": "1.0.4",
-        "d3-dispatch": "1.0.3",
-        "d3-quadtree": "1.0.3",
-        "d3-timer": "1.0.7"
+        "d3-dispatch": "1 - 3",
+        "d3-quadtree": "1 - 3",
+        "d3-timer": "1 - 3"
       }
     },
     "d3-format": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/d3-format/-/d3-format-1.2.2.tgz",
-      "integrity": "sha512-zH9CfF/3C8zUI47nsiKfD0+AGDEuM8LwBIP7pBVpyR4l/sKkZqITmMtxRp04rwBrlshIZ17XeFAaovN3++wzkw=="
+      "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": "1.10.0",
-      "resolved": "https://registry.npmjs.org/d3-geo/-/d3-geo-1.10.0.tgz",
-      "integrity": "sha1-KXLRgBTx44/B+LttVFN3vfsAyas=",
+      "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": "1.2.1"
+        "d3-array": "2.5.0 - 3"
       }
     },
     "d3-hierarchy": {
-      "version": "1.1.6",
-      "resolved": "https://registry.npmjs.org/d3-hierarchy/-/d3-hierarchy-1.1.6.tgz",
-      "integrity": "sha1-hCwTcgkPhwt+oBPrrlwMjZ9WIpw="
+      "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": "1.1.6",
-      "resolved": "https://registry.npmjs.org/d3-interpolate/-/d3-interpolate-1.1.6.tgz",
-      "integrity": "sha512-mOnv5a+pZzkNIHtw/V6I+w9Lqm9L5bG3OTXPM5A+QO0yyVMQ4W1uZhR+VOJmazaOZXri2ppbiZ5BUNWT0pFM9A==",
+      "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": "1.1.0"
+        "d3-color": "1 - 3"
       }
     },
     "d3-path": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/d3-path/-/d3-path-1.0.5.tgz",
-      "integrity": "sha1-JB6xhJvZ6egCHA0KeZ+KDo5EF2Q="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-path/-/d3-path-3.0.1.tgz",
+      "integrity": "sha512-gq6gZom9AFZby0YLduxT1qmrp4xpBA1YZr19OI717WIdKE2OM5ETq5qrHLb301IgxhLwcuxvGZVLeeWc/k1I6w=="
     },
     "d3-polygon": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/d3-polygon/-/d3-polygon-1.0.3.tgz",
-      "integrity": "sha1-FoiOkCZGCTPysXllKtN4Ik04LGI="
+      "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": "1.0.3",
-      "resolved": "https://registry.npmjs.org/d3-quadtree/-/d3-quadtree-1.0.3.tgz",
-      "integrity": "sha1-rHmH4+I/6AWpkPKOG1DTj8uCJDg="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-quadtree/-/d3-quadtree-3.0.1.tgz",
+      "integrity": "sha512-04xDrxQTDTCFwP5H6hRhsRcb9xxv2RzkcsygFzmkSIOJy3PeRJP7sNk3VRIbKXcog561P9oU0/rVH6vDROAgUw=="
     },
     "d3-random": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/d3-random/-/d3-random-1.1.0.tgz",
-      "integrity": "sha1-ZkLlBsb6OmSFldKyRpeIqNElKdM="
+      "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": "2.0.0",
-      "resolved": "https://registry.npmjs.org/d3-scale/-/d3-scale-2.0.0.tgz",
-      "integrity": "sha1-/YrHg4G8LtdB2McXcEN6XgVJpaU=",
+      "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": "1.2.1",
-        "d3-collection": "1.0.4",
-        "d3-format": "1.2.2",
-        "d3-interpolate": "1.1.6",
-        "d3-time": "1.0.8",
-        "d3-time-format": "2.1.1"
+        "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": "1.2.0",
-      "resolved": "https://registry.npmjs.org/d3-scale-chromatic/-/d3-scale-chromatic-1.2.0.tgz",
-      "integrity": "sha512-qQUhLi8fPe/F0b0M46C6eFUbms5IIMHuhJ5DKjjzBUvm1b6aPtygJzGbrMdMUD/ckLBq+NdWwHeN2cpMDp4Q5Q==",
+      "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": "1.1.0",
-        "d3-interpolate": "1.1.6"
+        "d3-color": "1 - 3",
+        "d3-interpolate": "1 - 3"
       }
     },
     "d3-selection": {
@@ -3471,30 +3515,33 @@
       "integrity": "sha1-1TdyOC09xPdQe/sovNLWrtKgrW0="
     },
     "d3-shape": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/d3-shape/-/d3-shape-1.2.0.tgz",
-      "integrity": "sha1-RdAVOPBkuv0F6j1tLLdI/YxB93c=",
+      "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": "1.0.5"
+        "d3-path": "1 - 3"
       }
     },
     "d3-time": {
-      "version": "1.0.8",
-      "resolved": "https://registry.npmjs.org/d3-time/-/d3-time-1.0.8.tgz",
-      "integrity": "sha1-29LWAHv0Fv5np20XlHt4S//qHoQ="
+      "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": "2.1.1",
-      "resolved": "https://registry.npmjs.org/d3-time-format/-/d3-time-format-2.1.1.tgz",
-      "integrity": "sha1-hbfN+8n/yhh/FNPEVv/aJoCBuzE=",
+      "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": "1.0.8"
+        "d3-time": "1 - 3"
       }
     },
     "d3-timer": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/d3-timer/-/d3-timer-1.0.7.tgz",
-      "integrity": "sha1-35ZQylh/bJZgf/TmDMOCKejdhTE="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-timer/-/d3-timer-3.0.1.tgz",
+      "integrity": "sha512-ndfJ/JxxMd3nw31uyKoY2naivF+r29V+Lc0svZxe1JvvIRmi8hUsrMvdOwgS1o6uBHmiz91geQ0ylPP0aj1VUA=="
     },
     "d3-tip": {
       "version": "0.9.1",
@@ -3506,33 +3553,34 @@
       }
     },
     "d3-transition": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/d3-transition/-/d3-transition-1.1.1.tgz",
-      "integrity": "sha1-2O+Jw7hIc1sGDlSjmzKq66pCEDk=",
+      "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": "1.1.0",
-        "d3-dispatch": "1.0.3",
-        "d3-ease": "1.0.3",
-        "d3-interpolate": "1.1.6",
-        "d3-selection": "1.3.0",
-        "d3-timer": "1.0.7"
+        "d3-color": "1 - 3",
+        "d3-dispatch": "1 - 3",
+        "d3-ease": "1 - 3",
+        "d3-interpolate": "1 - 3",
+        "d3-timer": "1 - 3"
       }
     },
-    "d3-voronoi": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/d3-voronoi/-/d3-voronoi-1.1.2.tgz",
-      "integrity": "sha1-Fodmfo8TotFYyAwUgMWinLDYlzw="
-    },
     "d3-zoom": {
-      "version": "1.7.1",
-      "resolved": "https://registry.npmjs.org/d3-zoom/-/d3-zoom-1.7.1.tgz",
-      "integrity": "sha1-AvQ7PD4ttU82RYLX5KI2zMVQa2M=",
+      "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": "1.0.3",
-        "d3-drag": "1.2.1",
-        "d3-interpolate": "1.1.6",
-        "d3-selection": "1.3.0",
-        "d3-transition": "1.1.1"
+        "d3-dispatch": "1 - 3",
+        "d3-drag": "2 - 3",
+        "d3-interpolate": "1 - 3",
+        "d3-selection": "2 - 3",
+        "d3-transition": "2 - 3"
+      },
+      "dependencies": {
+        "d3-selection": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/d3-selection/-/d3-selection-3.0.0.tgz",
+          "integrity": "sha512-fmTRWbNMmsmWq6xJV8D19U/gw/bwrHfNXxrIN+HfZgnzqTHp9jOmKMhsTUjXOJnZOdZY9Q28y4yebKzqDKlxlQ=="
+        }
       }
     },
     "dashdash": {
@@ -3731,6 +3779,14 @@
         }
       }
     },
+    "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.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
@@ -6395,6 +6451,11 @@
         "meow": "3.7.0"
       }
     },
+    "internmap": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/internmap/-/internmap-2.0.3.tgz",
+      "integrity": "sha512-5Hh7Y1wQbvY5ooGgPbDaL5iYLAPzMTUrjMulskHLH6wnv/A+1q5rgEaiuqEjB+oxGXIVZs1FF+R/KPN3ZSQYYg=="
+    },
     "interpret": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/interpret/-/interpret-1.1.0.tgz",
@@ -10891,6 +10952,11 @@
         "inherits": "2.0.3"
       }
     },
+    "robust-predicates": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/robust-predicates/-/robust-predicates-3.0.1.tgz",
+      "integrity": "sha512-ndEIpszUHiG4HtDsQLeIuMvRsDnn8c8rYStabochtUeCvfuvNptb5TUbVD68LRAILPX7p9nqQGh4xJgn3EHS/g=="
+    },
     "run-queue": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/run-queue/-/run-queue-1.0.3.tgz",
@@ -10903,7 +10969,7 @@
     "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": "5.6.0-forward-compat.5",
@@ -10927,6 +10993,11 @@
         "ret": "0.1.15"
       }
     },
+    "safer-buffer": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
+    },
     "sass-graph": {
       "version": "2.2.4",
       "resolved": "https://registry.npmjs.org/sass-graph/-/sass-graph-2.2.4.tgz",
diff --git a/package.json b/package.json
index c11e057..c3cf674 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "boom": "^7.2.0",
     "core-js": "^2.4.1",
     "cryptiles": "^4.1.2",
-    "d3": "^5.1.0",
+    "d3": "^7.6.1",
     "d3-tip": "^0.9.1",
     "express": "^4.16.3",
     "hammerjs": "^2.0.8",