diff --git a/package-lock.json b/package-lock.json
index 28cbcc6..247725d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "g-axis",
-  "version": "1.0.1",
+  "version": "0.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -796,7 +796,7 @@
       "dependencies": {
         "acorn": {
           "version": "3.3.0",
-          "resolved": "http://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
           "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
           "dev": true
         }
@@ -951,7 +951,7 @@
             },
             "is-accessor-descriptor": {
               "version": "0.1.6",
-              "resolved": "http://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
+              "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
               "integrity": "sha1-qeEss66Nh2cn7u84Q/igiXtcmNY=",
               "dev": true,
               "requires": {
@@ -971,7 +971,7 @@
             },
             "is-data-descriptor": {
               "version": "0.1.4",
-              "resolved": "http://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
+              "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
               "integrity": "sha1-C17mSDiOLIYCgueT8YVv7D8wG1Y=",
               "dev": true,
               "requires": {
@@ -1311,7 +1311,7 @@
         },
         "chalk": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
@@ -1360,7 +1360,7 @@
       "dependencies": {
         "jsesc": {
           "version": "1.3.0",
-          "resolved": "http://registry.npmjs.org/jsesc/-/jsesc-1.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-1.3.0.tgz",
           "integrity": "sha1-RsP+yMGJKxKwgz25vHYiF226s0s=",
           "dev": true
         }
@@ -1482,7 +1482,7 @@
         },
         "json5": {
           "version": "0.5.1",
-          "resolved": "http://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
+          "resolved": "https://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
           "integrity": "sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=",
           "dev": true
         },
@@ -1703,7 +1703,7 @@
       "dependencies": {
         "resolve": {
           "version": "1.1.7",
-          "resolved": "http://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",
+          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",
           "integrity": "sha1-IDEU2CrSxe2ejgQRs5ModeiJ6Xs=",
           "dev": true
         }
@@ -1999,7 +1999,8 @@
     "commander": {
       "version": "2.19.0",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.19.0.tgz",
-      "integrity": "sha512-6tvAOO+D6OENvRAh524Dh9jcfKTYDQAqvqezbCW82xj5X0pSrcpxtvRKHLG0yBY6SD7PSDrJaj+0AiOcKVd1Xg=="
+      "integrity": "sha512-6tvAOO+D6OENvRAh524Dh9jcfKTYDQAqvqezbCW82xj5X0pSrcpxtvRKHLG0yBY6SD7PSDrJaj+0AiOcKVd1Xg==",
+      "dev": true
     },
     "common-tags": {
       "version": "1.8.0",
@@ -2144,258 +2145,310 @@
       }
     },
     "d3": {
-      "version": "4.13.0",
-      "resolved": "https://registry.npmjs.org/d3/-/d3-4.13.0.tgz",
-      "integrity": "sha512-l8c4+0SldjVKLaE2WG++EQlqD7mh/dmQjvi2L2lKPadAVC+TbJC4ci7Uk9bRi+To0+ansgsS0iWfPjD7DBy+FQ==",
-      "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": "1.0.3",
-        "d3-dispatch": "1.0.3",
-        "d3-drag": "1.2.1",
-        "d3-dsv": "1.0.8",
-        "d3-ease": "1.0.3",
-        "d3-force": "1.1.0",
-        "d3-format": "1.2.2",
-        "d3-geo": "1.9.1",
-        "d3-hierarchy": "1.1.5",
-        "d3-interpolate": "1.1.6",
-        "d3-path": "1.0.5",
-        "d3-polygon": "1.0.3",
-        "d3-quadtree": "1.0.3",
-        "d3-queue": "3.0.7",
-        "d3-random": "1.1.0",
-        "d3-request": "1.0.6",
-        "d3-scale": "1.0.7",
-        "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": "sha512-CyINJQ0SOUHojDdFDH4JEM0552vCR1utGyLHegJHyYH0JyCpSeTPxi4OBqHMA2jJZq4NH782LtaJWBImqI/HBw=="
+      "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=",
-      "requires": {
-        "d3-dispatch": "1",
-        "d3-drag": "1",
-        "d3-interpolate": "1",
-        "d3-selection": "1",
-        "d3-transition": "1"
+      "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 - 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",
-        "d3-path": "1"
+        "d3-path": "1 - 3"
       }
     },
-    "d3-collection": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/d3-collection/-/d3-collection-1.0.4.tgz",
-      "integrity": "sha1-NC39EoN8kJdPM/HMCnha6lcNzcI="
-    },
     "d3-color": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/d3-color/-/d3-color-1.0.3.tgz",
-      "integrity": "sha1-vHZD/KjlOoNH4vva/6I2eWtYUJs="
+      "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": "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": {
+        "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": "sha512-Cg8/K2rTtzxzrb0fmnYOUeZHvwa4PHzwXOLZZPwtEs2SKLLKLXeYwZKBB+DlOxUvFmarOnmt//cU4+3US2lyyQ==",
+      "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"
+      },
+      "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": "sha512-IVCJpQ+YGe3qu6odkPQI0KPqfxkhbP/oM1XhhE/DFiYmcXKfCRub4KXyiuehV1d4drjWVXHUWx4gHqhdZb6n/A==",
+      "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": "1.0.3",
-      "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": "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 - 3"
+      }
     },
     "d3-force": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/d3-force/-/d3-force-1.1.0.tgz",
-      "integrity": "sha512-2HVQz3/VCQs0QeRNZTYb7GxoUCeb6bOzMp/cGcLa87awY9ZsPvXOGeZm0iaGBjXic6I1ysKwMn+g+5jSAdzwcg==",
+      "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": "1.2.2",
-      "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": "1.9.1",
-      "resolved": "https://registry.npmjs.org/d3-geo/-/d3-geo-1.9.1.tgz",
-      "integrity": "sha512-l9wL/cEQkyZQYXw3xbmLsH3eQ5ij+icNfo4r0GrLa5rOCZR/e/3am45IQ0FvQ5uMsv+77zBRunLc9ufTWSQYFA==",
+      "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": "1.1.5",
-      "resolved": "https://registry.npmjs.org/d3-hierarchy/-/d3-hierarchy-1.1.5.tgz",
-      "integrity": "sha1-ochFxC+Eoga88cAcAQmOpN2qeiY="
+      "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"
+        "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="
-    },
-    "d3-queue": {
-      "version": "3.0.7",
-      "resolved": "https://registry.npmjs.org/d3-queue/-/d3-queue-3.0.7.tgz",
-      "integrity": "sha1-yTouVLQXwJWRKdfXP2z31Ckudhg="
+      "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-request": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/d3-request/-/d3-request-1.0.6.tgz",
-      "integrity": "sha512-FJj8ySY6GYuAJHZMaCQ83xEYE4KbkPkmxZ3Hu6zA1xxG2GD+z6P+Lyp+zjdsHf0xEbp2xcluDI50rCS855EQ6w==",
+    "d3-scale": {
+      "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-collection": "1",
-        "d3-dispatch": "1",
-        "d3-dsv": "1",
-        "xmlhttprequest": "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": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/d3-scale/-/d3-scale-1.0.7.tgz",
-      "integrity": "sha512-KvU92czp2/qse5tUfGms6Kjig0AhHOwkzXG0+PqIJB3ke0WUv088AHMZI0OssO9NCkXt4RP8yju9rpH8aGB7Lw==",
+    "d3-scale-chromatic": {
+      "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-array": "^1.2.0",
-        "d3-collection": "1",
-        "d3-color": "1",
-        "d3-format": "1",
-        "d3-interpolate": "1",
-        "d3-time": "1",
-        "d3-time-format": "2"
+        "d3-color": "1 - 3",
+        "d3-interpolate": "1 - 3"
       }
     },
     "d3-selection": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/d3-selection/-/d3-selection-1.3.0.tgz",
-      "integrity": "sha512-qgpUOg9tl5CirdqESUAu0t9MU/t3O9klYfGfyKsXEmhyxyzLpzpeh08gaxBUTQw1uXIOkr/30Ut2YRjSSxlmHA=="
+      "integrity": "sha512-qgpUOg9tl5CirdqESUAu0t9MU/t3O9klYfGfyKsXEmhyxyzLpzpeh08gaxBUTQw1uXIOkr/30Ut2YRjSSxlmHA==",
+      "dev": true
     },
     "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"
+        "d3-path": "1 - 3"
       }
     },
     "d3-time": {
-      "version": "1.0.8",
-      "resolved": "https://registry.npmjs.org/d3-time/-/d3-time-1.0.8.tgz",
-      "integrity": "sha512-YRZkNhphZh3KcnBfitvF3c6E0JOFGikHZ4YqD+Lzv83ZHn1/u6yGenRU1m+KAk9J1GnZMnKcrtfvSktlA1DXNQ=="
+      "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": "sha512-8kAkymq2WMfzW7e+s/IUNAtN/y3gZXGRrdGfo6R8NKPAA85UBTxZg5E61bR6nLwjPjj4d3zywSQe1CkYLPFyrw==",
+      "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": "1.0.7",
-      "resolved": "https://registry.npmjs.org/d3-timer/-/d3-timer-1.0.7.tgz",
-      "integrity": "sha512-vMZXR88XujmG/L5oB96NNKH5lCWwiLM/S2HyyAQLcjWJCloK5shxta4CwOFYLZoY3AWX73v8Lgv4cCAdWtRmOA=="
+      "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": "1.1.1",
-      "resolved": "https://registry.npmjs.org/d3-transition/-/d3-transition-1.1.1.tgz",
-      "integrity": "sha512-xeg8oggyQ+y5eb4J13iDgKIjUcEfIOZs2BqV/eEmXm2twx80wTzJ4tB4vaZ5BKfz7XsI/DFmQL5me6O27/5ykQ==",
+      "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": "1.1.2",
-      "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": "sha512-sZHQ55DGq5BZBFGnRshUT8tm2sfhPHFnOlmPbbwTkAoPeVdRTkB4Xsf9GCY0TSHrTD8PeJPZGmP/TpGicwJDJQ==",
-      "requires": {
-        "d3-dispatch": "1",
-        "d3-drag": "1",
-        "d3-interpolate": "1",
-        "d3-selection": "1",
-        "d3-transition": "1"
+      "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 - 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": {
@@ -2538,6 +2591,14 @@
         }
       }
     },
+    "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",
@@ -2847,7 +2908,7 @@
         },
         "chalk": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
@@ -2985,7 +3046,7 @@
         },
         "doctrine": {
           "version": "1.5.0",
-          "resolved": "http://registry.npmjs.org/doctrine/-/doctrine-1.5.0.tgz",
+          "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-1.5.0.tgz",
           "integrity": "sha1-N53Ocw9hZvds76TmcHoVmwLFpvo=",
           "dev": true,
           "requires": {
@@ -3464,7 +3525,8 @@
           "version": "2.1.1",
           "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
           "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -3488,13 +3550,15 @@
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
           "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
           "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -3511,19 +3575,22 @@
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
           "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
           "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
           "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -3654,7 +3721,8 @@
           "version": "2.0.3",
           "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
           "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -3668,6 +3736,7 @@
           "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
           "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -3684,6 +3753,7 @@
           "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
           "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -3692,13 +3762,15 @@
           "version": "0.0.8",
           "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
           "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.2.4",
           "resolved": "https://registry.npmjs.org/minipass/-/minipass-2.2.4.tgz",
           "integrity": "sha512-hzXIWWet/BzWhYs2b+u7dRHlruXhwdgvlTMDKC6Cb1U7ps6Ac6yQlR39xsbjWJE377YTCtKwIXIpJ5oP+j5y8g==",
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.1",
             "yallist": "^3.0.0"
@@ -3719,6 +3791,7 @@
           "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
           "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -3807,7 +3880,8 @@
           "version": "1.0.1",
           "resolved": "https://registry.npmjs.org/number-is-nan/-/number-is-nan-1.0.1.tgz",
           "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -3821,6 +3895,7 @@
           "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
           "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -3916,7 +3991,8 @@
           "version": "5.1.1",
           "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
           "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -3958,6 +4034,7 @@
           "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
           "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -3979,6 +4056,7 @@
           "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -4027,13 +4105,15 @@
           "version": "1.0.2",
           "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
           "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.2",
           "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.2.tgz",
           "integrity": "sha1-hFK0u36Dx8GI2AQcGoN8dz1ti7k=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -4372,6 +4452,7 @@
       "version": "0.4.24",
       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
       "integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
+      "dev": true,
       "requires": {
         "safer-buffer": ">= 2.1.2 < 3"
       }
@@ -4448,7 +4529,7 @@
     },
     "inquirer": {
       "version": "0.12.0",
-      "resolved": "http://registry.npmjs.org/inquirer/-/inquirer-0.12.0.tgz",
+      "resolved": "https://registry.npmjs.org/inquirer/-/inquirer-0.12.0.tgz",
       "integrity": "sha1-HvK/1jUE3wvHV4X/+MLEHfEvB34=",
       "dev": true,
       "requires": {
@@ -4475,7 +4556,7 @@
         },
         "chalk": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
@@ -4494,6 +4575,11 @@
         }
       }
     },
+    "internmap": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/internmap/-/internmap-2.0.3.tgz",
+      "integrity": "sha512-5Hh7Y1wQbvY5ooGgPbDaL5iYLAPzMTUrjMulskHLH6wnv/A+1q5rgEaiuqEjB+oxGXIVZs1FF+R/KPN3ZSQYYg=="
+    },
     "interpret": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/interpret/-/interpret-1.1.0.tgz",
@@ -4517,7 +4603,7 @@
     },
     "is-accessor-descriptor": {
       "version": "0.1.6",
-      "resolved": "http://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
+      "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
       "integrity": "sha1-qeEss66Nh2cn7u84Q/igiXtcmNY=",
       "dev": true,
       "requires": {
@@ -4562,7 +4648,7 @@
     },
     "is-data-descriptor": {
       "version": "0.1.4",
-      "resolved": "http://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
+      "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
       "integrity": "sha1-C17mSDiOLIYCgueT8YVv7D8wG1Y=",
       "dev": true,
       "requires": {
@@ -5078,7 +5164,7 @@
         },
         "json5": {
           "version": "0.5.1",
-          "resolved": "http://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
+          "resolved": "https://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
           "integrity": "sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=",
           "dev": true
         },
@@ -5356,7 +5442,7 @@
         },
         "json5": {
           "version": "0.5.1",
-          "resolved": "http://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
+          "resolved": "https://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
           "integrity": "sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=",
           "dev": true
         },
@@ -5747,7 +5833,7 @@
         },
         "chalk": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
@@ -5924,7 +6010,7 @@
     },
     "minimist": {
       "version": "1.2.0",
-      "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
       "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
       "dev": true
     },
@@ -5951,7 +6037,7 @@
     },
     "mkdirp": {
       "version": "0.5.1",
-      "resolved": "http://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
       "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
       "dev": true,
       "requires": {
@@ -5960,7 +6046,7 @@
       "dependencies": {
         "minimist": {
           "version": "0.0.8",
-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
           "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
           "dev": true
         }
@@ -6242,7 +6328,7 @@
     },
     "onetime": {
       "version": "1.1.0",
-      "resolved": "http://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
       "integrity": "sha1-ofeDj4MUxRbwXs78vEzP4EtO14k=",
       "dev": true
     },
@@ -6258,7 +6344,7 @@
       "dependencies": {
         "minimist": {
           "version": "0.0.10",
-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
           "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=",
           "dev": true
         },
@@ -6286,7 +6372,7 @@
     },
     "os-homedir": {
       "version": "1.0.2",
-      "resolved": "http://registry.npmjs.org/os-homedir/-/os-homedir-1.0.2.tgz",
+      "resolved": "https://registry.npmjs.org/os-homedir/-/os-homedir-1.0.2.tgz",
       "integrity": "sha1-/7xJiDNuDoM94MFox+8VISGqf7M=",
       "dev": true
     },
@@ -6303,7 +6389,7 @@
     },
     "os-tmpdir": {
       "version": "1.0.2",
-      "resolved": "http://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
+      "resolved": "https://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
       "integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=",
       "dev": true
     },
@@ -6394,7 +6480,7 @@
     },
     "path-is-absolute": {
       "version": "1.0.1",
-      "resolved": "http://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
       "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
       "dev": true
     },
@@ -6603,7 +6689,7 @@
         },
         "eslint": {
           "version": "4.19.1",
-          "resolved": "http://registry.npmjs.org/eslint/-/eslint-4.19.1.tgz",
+          "resolved": "https://registry.npmjs.org/eslint/-/eslint-4.19.1.tgz",
           "integrity": "sha512-bT3/1x1EbZB7phzYu7vCr1v3ONuzDtX8WjuM9c0iYxe+cq+pwcKEoQjl7zd3RpC6YOLgnSy3cTN58M2jcoPDIQ==",
           "dev": true,
           "requires": {
@@ -6649,7 +6735,7 @@
         },
         "fast-deep-equal": {
           "version": "1.1.0",
-          "resolved": "http://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz",
           "integrity": "sha1-wFNHeBfIa1HaqFPIHgWbcz0CNhQ=",
           "dev": true
         },
@@ -6855,7 +6941,7 @@
     },
     "progress": {
       "version": "1.1.8",
-      "resolved": "http://registry.npmjs.org/progress/-/progress-1.1.8.tgz",
+      "resolved": "https://registry.npmjs.org/progress/-/progress-1.1.8.tgz",
       "integrity": "sha1-4mDHj2Fhzdmw5WzD4Khd4Xx6V74=",
       "dev": true
     },
@@ -7027,7 +7113,7 @@
     },
     "readable-stream": {
       "version": "2.3.6",
-      "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
       "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
       "dev": true,
       "requires": {
@@ -7155,7 +7241,7 @@
       "dependencies": {
         "jsesc": {
           "version": "0.5.0",
-          "resolved": "http://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
+          "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
           "integrity": "sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=",
           "dev": true
         }
@@ -7327,6 +7413,11 @@
         "glob": "^7.0.5"
       }
     },
+    "robust-predicates": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/robust-predicates/-/robust-predicates-3.0.1.tgz",
+      "integrity": "sha512-ndEIpszUHiG4HtDsQLeIuMvRsDnn8c8rYStabochtUeCvfuvNptb5TUbVD68LRAILPX7p9nqQGh4xJgn3EHS/g=="
+    },
     "rollup": {
       "version": "0.57.1",
       "resolved": "http://registry.npmjs.org/rollup/-/rollup-0.57.1.tgz",
@@ -7374,7 +7465,7 @@
     "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=="
     },
     "rx-lite": {
       "version": "3.1.2",
@@ -7513,7 +7604,7 @@
             },
             "is-accessor-descriptor": {
               "version": "0.1.6",
-              "resolved": "http://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
+              "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
               "integrity": "sha1-qeEss66Nh2cn7u84Q/igiXtcmNY=",
               "dev": true,
               "requires": {
@@ -7533,7 +7624,7 @@
             },
             "is-data-descriptor": {
               "version": "0.1.4",
-              "resolved": "http://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
+              "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
               "integrity": "sha1-C17mSDiOLIYCgueT8YVv7D8wG1Y=",
               "dev": true,
               "requires": {
@@ -7830,7 +7921,7 @@
     },
     "slice-ansi": {
       "version": "0.0.4",
-      "resolved": "http://registry.npmjs.org/slice-ansi/-/slice-ansi-0.0.4.tgz",
+      "resolved": "https://registry.npmjs.org/slice-ansi/-/slice-ansi-0.0.4.tgz",
       "integrity": "sha1-7b+JA/ZvfOL46v1s7tZeJkyDGzU=",
       "dev": true
     },
@@ -8135,7 +8226,7 @@
     },
     "string-width": {
       "version": "1.0.2",
-      "resolved": "http://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
       "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
       "dev": true,
       "requires": {
@@ -8146,7 +8237,7 @@
     },
     "string_decoder": {
       "version": "1.1.1",
-      "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
       "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
       "dev": true,
       "requires": {
@@ -8155,7 +8246,7 @@
     },
     "strip-ansi": {
       "version": "3.0.1",
-      "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
       "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
       "dev": true,
       "requires": {
@@ -8200,7 +8291,7 @@
     },
     "table": {
       "version": "3.8.3",
-      "resolved": "http://registry.npmjs.org/table/-/table-3.8.3.tgz",
+      "resolved": "https://registry.npmjs.org/table/-/table-3.8.3.tgz",
       "integrity": "sha1-K7xULw/amGGnVdOUf+/Ys/UThV8=",
       "dev": true,
       "requires": {
@@ -8236,7 +8327,7 @@
         },
         "chalk": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
@@ -8873,11 +8964,6 @@
       "integrity": "sha512-A5CUptxDsvxKJEU3yO6DuWBSJz/qizqzJKOMIfUJHETbBw/sFaDxgd6fxm1ewUaM0jZ444Fc5vC5ROYurg/4Pw==",
       "dev": true
     },
-    "xmlhttprequest": {
-      "version": "1.8.0",
-      "resolved": "https://registry.npmjs.org/xmlhttprequest/-/xmlhttprequest-1.8.0.tgz",
-      "integrity": "sha1-Z/4HXFwk/vOfnWX197f+dRcZaPw="
-    },
     "xtend": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
diff --git a/package.json b/package.json
index d4ab829..6f13f38 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "lint:fix": "eslint --fix {index.js,src/*.js,test/*.js}"
   },
   "dependencies": {
-    "d3": "^4.9.1"
+    "d3": "^7.6.1"
   },
   "devDependencies": {
     "@babel/core": "^7.2.2",