diff --git a/package-lock.json b/package-lock.json
index 85b980b..1875441 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -74,9 +74,9 @@
       "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
     },
     "d3": {
-      "version": "6.2.0",
-      "resolved": "https://registry.npmjs.org/d3/-/d3-6.2.0.tgz",
-      "integrity": "sha512-aH+kx55J8vRBh4K4k9GN4EbNO3QnZsXy4XBfrnr4fL2gQuszUAPQU3fV2oObO2iSpreRH/bG/wfvO+hDu2+e9w==",
+      "version": "6.6.2",
+      "resolved": "https://registry.npmjs.org/d3/-/d3-6.6.2.tgz",
+      "integrity": "sha512-wvC9cZe05bUCo00VFKXLQJWmWhGv0U43Qv0gn+tkl144S7bV22E80Gnp06BEuJVuwVfa6+S8UOfl8H9Ru/cmgA==",
       "requires": {
         "d3-array": "2",
         "d3-axis": "2",
@@ -111,14 +111,17 @@
       }
     },
     "d3-array": {
-      "version": "2.8.0",
-      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-2.8.0.tgz",
-      "integrity": "sha512-6V272gsOeg7+9pTW1jSYOR1QE37g95I3my1hBmY+vOUNHRrk9yt4OTz/gK7PMkVAVDrYYq4mq3grTiZ8iJdNIw=="
+      "version": "2.12.1",
+      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-2.12.1.tgz",
+      "integrity": "sha512-B0ErZK/66mHtEsR1TkPEEkwdy+WDesimkM5gpZr5Dsg54BiTA5RXtYW5qTLIAcekaS9xfZrzBLF/OAkB3Qn1YQ==",
+      "requires": {
+        "internmap": "^1.0.0"
+      }
     },
     "d3-axis": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/d3-axis/-/d3-axis-2.0.0.tgz",
-      "integrity": "sha512-9nzB0uePtb+u9+dWir+HTuEAKJOEUYJoEwbJPsZ1B4K3iZUgzJcSENQ05Nj7S4CIfbZZ8/jQGoUzGKFznBhiiQ=="
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/d3-axis/-/d3-axis-2.1.0.tgz",
+      "integrity": "sha512-z/G2TQMyuf0X3qP+Mh+2PimoJD41VOCjViJzT0BHeL/+JQAofkiWZbWxlwFGb1N8EN+Cl/CW+MUKbVzr1689Cw=="
     },
     "d3-brush": {
       "version": "2.1.0",
@@ -255,9 +258,9 @@
       "integrity": "sha512-0D9P8TRj6qDAtHhRQn6EfdOtHMfsUWanl3yb/84C4DqpZ+VsgfI5iTVRNRbELCfNvRfpMr8OrqqUTQ6ANGCijw=="
     },
     "d3-scale": {
-      "version": "3.2.3",
-      "resolved": "https://registry.npmjs.org/d3-scale/-/d3-scale-3.2.3.tgz",
-      "integrity": "sha512-8E37oWEmEzj57bHcnjPVOBS3n4jqakOeuv1EDdQSiSrYnMCBdMd3nc4HtKk7uia8DUHcY/CGuJ42xxgtEYrX0g==",
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/d3-scale/-/d3-scale-3.2.4.tgz",
+      "integrity": "sha512-PG6gtpbPCFqKbvdBEswQcJcTzHC8VEd/XzezF5e68KlkT4/ggELw/nR1tv863jY6ufKTvDlzCMZvhe06codbbA==",
       "requires": {
         "d3-array": "^2.3.0",
         "d3-format": "1 - 2",
@@ -281,9 +284,9 @@
       "integrity": "sha512-XoGGqhLUN/W14NmaqcO/bb1nqjDAw5WtSYb2X8wiuQWvSZUsUVYsOSkOybUrNvcBjaywBdYPy03eXHMXjk9nZA=="
     },
     "d3-shape": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/d3-shape/-/d3-shape-2.0.0.tgz",
-      "integrity": "sha512-djpGlA779ua+rImicYyyjnOjeubyhql1Jyn1HK0bTyawuH76UQRWXd+pftr67H6Fa8hSwetkgb/0id3agKWykw==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/d3-shape/-/d3-shape-2.1.0.tgz",
+      "integrity": "sha512-PnjUqfM2PpskbSLTJvAzp2Wv4CZsnAgTfcVRTwW03QR3MkXF8Uo7B1y/lWkAsmbKwuecto++4NlsYcvYpXpTHA==",
       "requires": {
         "d3-path": "1 - 2"
       }
@@ -464,6 +467,11 @@
       "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
       "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
     },
+    "internmap": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/internmap/-/internmap-1.0.1.tgz",
+      "integrity": "sha512-lDB5YccMydFBtasVtxnZ3MRBHuaoE8GKsppq+EchKL2U4nK/DmEpPHNH8MZe5HkMtpSiTSOZwfN0tzYjO/lJEw=="
+    },
     "ipaddr.js": {
       "version": "1.9.0",
       "resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-1.9.0.tgz",