diff --git a/package-lock.json b/package-lock.json
index 612996d..2567104 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -44,7 +44,7 @@
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-          "resolved": "http://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
           "integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc=",
           "dev": true
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@@ -297,7 +297,7 @@
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-      "resolved": "http://registry.npmjs.org/async/-/async-0.9.2.tgz",
+      "resolved": "https://registry.npmjs.org/async/-/async-0.9.2.tgz",
       "integrity": "sha1-rqdNXmHB+JlhO/ZL2mbUx48v0X0=",
       "dev": true,
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@@ -2610,6 +2610,7 @@
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       "integrity": "sha1-emNune1O/O+xnO9JR6PGffrukRs=",
       "dev": true,
+      "optional": true,
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@@ -3103,7 +3104,7 @@
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-          "resolved": "http://registry.npmjs.org/combined-stream/-/combined-stream-0.0.7.tgz",
+          "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-0.0.7.tgz",
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@@ -3175,7 +3176,7 @@
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-          "resolved": "http://registry.npmjs.org/request/-/request-2.40.0.tgz",
+          "resolved": "https://registry.npmjs.org/request/-/request-2.40.0.tgz",
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@@ -3608,18 +3609,32 @@
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-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.1.tgz",
-      "integrity": "sha512-BsXLz5sqX8OHcsh7CqBMztyXARmGQ3LWPtGjJi6DiJHq5C/qvi9P3OqgswKSDftbu8+IoI/QDTAm2fFnQ9SZSQ==",
+      "version": "6.5.4",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
+      "integrity": "sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==",
       "dev": true,
       "requires": {
-        "bn.js": "^4.4.0",
-        "brorand": "^1.0.1",
+        "bn.js": "^4.11.9",
+        "brorand": "^1.1.0",
         "hash.js": "^1.0.0",
-        "hmac-drbg": "^1.0.0",
-        "inherits": "^2.0.1",
-        "minimalistic-assert": "^1.0.0",
-        "minimalistic-crypto-utils": "^1.0.0"
+        "hmac-drbg": "^1.0.1",
+        "inherits": "^2.0.4",
+        "minimalistic-assert": "^1.0.1",
+        "minimalistic-crypto-utils": "^1.0.1"
+      },
+      "dependencies": {
+        "bn.js": {
+          "version": "4.12.0",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.0.tgz",
+          "integrity": "sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA==",
+          "dev": true
+        },
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
+          "dev": true
+        }
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     "emojis-list": {
@@ -3912,7 +3927,7 @@
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-          "resolved": "http://registry.npmjs.org/globals/-/globals-8.18.0.tgz",
+          "resolved": "https://registry.npmjs.org/globals/-/globals-8.18.0.tgz",
           "integrity": "sha1-k9SmK9ysOM+vr8R9awNHaMsP/LQ=",
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@@ -4171,7 +4186,7 @@
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-          "resolved": "http://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-0.9.0.tgz",
+          "resolved": "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-0.9.0.tgz",
           "integrity": "sha1-DjaExsuZlbQ+/J3wPkw2XZX9nMA="
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@@ -4331,7 +4346,7 @@
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-          "resolved": "http://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
+          "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
           "integrity": "sha1-cj599ugBrFYTETp+RFqbactjKBg=",
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@@ -4390,7 +4405,8 @@
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           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
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@@ -4805,7 +4821,8 @@
         "safe-buffer": {
           "version": "5.1.1",
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-          "dev": true
+          "dev": true,
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@@ -4861,6 +4878,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4904,12 +4922,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "3.0.2",
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-          "dev": true
+          "dev": true,
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@@ -4996,6 +5016,7 @@
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       "integrity": "sha1-gTg9ctsFT8zPUzbaqQLxgvbtuyg=",
       "dev": true,
+      "optional": true,
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@@ -5228,7 +5249,8 @@
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       "integrity": "sha1-PTIkYrrfB3Fup+uFuviAec3c5QU=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -5454,7 +5476,8 @@
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       "integrity": "sha1-rEaBd8SUNAWgkvyPKXYMb/xiBsA=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -5479,6 +5502,7 @@
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       "integrity": "sha1-0Jb5JqPe1WAPP9/ZEZjLCIjC2GM=",
       "dev": true,
+      "optional": true,
       "requires": {
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@@ -5671,7 +5695,7 @@
       "dependencies": {
         "async": {
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-          "resolved": "http://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
           "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
           "dev": true
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@@ -5683,7 +5707,7 @@
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-          "resolved": "http://registry.npmjs.org/handlebars/-/handlebars-3.0.0.tgz",
+          "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-3.0.0.tgz",
           "integrity": "sha1-f05Tf03WmShp1mwBt1BeujVhpdU=",
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@@ -5709,7 +5733,7 @@
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           "version": "2.3.6",
-          "resolved": "http://registry.npmjs.org/uglify-js/-/uglify-js-2.3.6.tgz",
+          "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-2.3.6.tgz",
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@@ -5721,7 +5745,7 @@
           "dependencies": {
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-              "resolved": "http://registry.npmjs.org/async/-/async-0.2.10.tgz",
+              "resolved": "https://registry.npmjs.org/async/-/async-0.2.10.tgz",
               "integrity": "sha1-trvgsGdLnXGXCMo43owjfLUmw9E=",
               "dev": true,
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@@ -5752,7 +5776,7 @@
       "dependencies": {
         "commander": {
           "version": "0.6.1",
-          "resolved": "http://registry.npmjs.org/commander/-/commander-0.6.1.tgz",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-0.6.1.tgz",
           "integrity": "sha1-+mihT2qUXVTbvlDYzbMyDp47GgY=",
           "dev": true
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@@ -5820,7 +5844,7 @@
       "dependencies": {
         "acorn": {
           "version": "1.2.2",
-          "resolved": "http://registry.npmjs.org/acorn/-/acorn-1.2.2.tgz",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-1.2.2.tgz",
           "integrity": "sha1-yM4n3grMdtiW0rH6099YjZ6C8BQ=",
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@@ -5995,7 +6019,7 @@
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     "lodash": {
       "version": "3.10.1",
-      "resolved": "http://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
       "integrity": "sha1-W/Rejkm6QYnhfUgnid/RW9FAt7Y=",
       "dev": true
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@@ -6507,13 +6531,13 @@
       "dependencies": {
         "commander": {
           "version": "2.3.0",
-          "resolved": "http://registry.npmjs.org/commander/-/commander-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.3.0.tgz",
           "integrity": "sha1-/UMOiJgy7DU7ms0d4hfBHLPu+HM=",
           "dev": true
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         "debug": {
           "version": "2.2.0",
-          "resolved": "http://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
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@@ -6548,7 +6572,7 @@
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-          "resolved": "http://registry.npmjs.org/ms/-/ms-0.7.1.tgz",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-0.7.1.tgz",
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@@ -7241,7 +7265,7 @@
       "dependencies": {
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-          "resolved": "http://registry.npmjs.org/fbjs/-/fbjs-0.3.2.tgz",
+          "resolved": "https://registry.npmjs.org/fbjs/-/fbjs-0.3.2.tgz",
           "integrity": "sha1-AzpUBZUIS13jUJpAXQbxoqjlufs=",
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@@ -7254,7 +7278,7 @@
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-          "resolved": "http://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-0.9.0.tgz",
+          "resolved": "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-0.9.0.tgz",
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@@ -8349,7 +8373,7 @@
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-      "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=",
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@@ -8640,7 +8664,7 @@
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-          "resolved": "http://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
           "integrity": "sha1-9+572FfdfB0tOMDnTvvWgdFDH9E=",
           "dev": true,
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