diff --git a/package-lock.json b/package-lock.json
index 1c79dc3..a19974d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -171,7 +171,8 @@
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       "resolved": "https://registry.npmjs.org/arr-union/-/arr-union-3.1.0.tgz",
-      "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ="
+      "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ=",
+      "optional": true
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@@ -231,7 +232,8 @@
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-      "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c="
+      "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c=",
+      "optional": true
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@@ -260,7 +262,8 @@
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       "resolved": "https://registry.npmjs.org/atob/-/atob-2.1.1.tgz",
-      "integrity": "sha1-ri1acpR38onWDdf5amMUoi3Wwio="
+      "integrity": "sha1-ri1acpR38onWDdf5amMUoi3Wwio=",
+      "optional": true
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@@ -419,6 +422,7 @@
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+      "optional": true,
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@@ -433,6 +437,7 @@
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           "integrity": "sha1-dp66rz9KY6rTr56NMEybvnm/sOY=",
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@@ -441,6 +446,7 @@
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+          "optional": true,
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@@ -449,6 +455,7 @@
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+          "optional": true,
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@@ -457,6 +464,7 @@
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+          "optional": true,
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@@ -466,12 +474,14 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
+          "optional": true
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-          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA=="
+          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==",
+          "optional": true
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@@ -550,6 +560,7 @@
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       "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
+      "optional": true,
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@@ -801,6 +812,7 @@
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+      "optional": true,
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@@ -816,7 +828,8 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
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@@ -911,6 +924,7 @@
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+      "optional": true,
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@@ -922,6 +936,7 @@
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           "integrity": "sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=",
+          "optional": true,
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@@ -929,7 +944,8 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
+          "optional": true
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@@ -968,6 +984,7 @@
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       "integrity": "sha1-S8A3PBZLwykbTTaMgpzxqApZ3KA=",
+      "optional": true,
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         "object-visit": "^1.0.0"
@@ -1011,6 +1028,7 @@
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       "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
       "integrity": "sha1-cj599ugBrFYTETp+RFqbactjKBg=",
+      "optional": true,
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@@ -1028,7 +1046,8 @@
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-      "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY="
+      "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=",
+      "optional": true
     },
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@@ -1223,7 +1242,8 @@
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       "resolved": "https://registry.npmjs.org/copy-descriptor/-/copy-descriptor-0.1.1.tgz",
-      "integrity": "sha1-Z29us8OZl8LuGsOpJP1hJHSPV40="
+      "integrity": "sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=",
+      "optional": true
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@@ -1379,7 +1399,8 @@
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-      "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU="
+      "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=",
+      "optional": true
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@@ -1402,6 +1423,7 @@
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+      "optional": true,
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@@ -1411,6 +1433,7 @@
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+          "optional": true,
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@@ -1419,6 +1442,7 @@
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+          "optional": true,
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@@ -1427,6 +1451,7 @@
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+          "optional": true,
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@@ -1436,12 +1461,14 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
+          "optional": true
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+          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==",
+          "optional": true
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@@ -1453,7 +1480,8 @@
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-      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk="
+      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
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@@ -1740,6 +1768,7 @@
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       "integrity": "sha1-Jqcarwc7OfshJxcnRhMcJwQCjbg=",
+      "optional": true,
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@@ -1749,6 +1778,7 @@
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+          "optional": true,
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@@ -1766,7 +1796,8 @@
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-      "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU="
+      "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=",
+      "optional": true
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@@ -1843,6 +1874,7 @@
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       "integrity": "sha1-QpD60n8T6Jvn8zeZxrxaCr//DRk=",
+      "optional": true,
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@@ -1874,7 +1906,8 @@
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         "ansi-regex": {
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-          "bundled": true
+          "bundled": true,
+          "optional": true
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@@ -1892,11 +1925,13 @@
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         "balanced-match": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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           "bundled": true,
+          "optional": true,
           "requires": {
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@@ -1909,15 +1944,18 @@
         },
         "code-point-at": {
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-          "bundled": true
+          "bundled": true,
+          "optional": true
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         "concat-map": {
           "version": "0.0.1",
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+          "bundled": true,
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           "version": "1.1.0",
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+          "bundled": true,
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         "core-util-is": {
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@@ -2020,7 +2058,8 @@
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+          "bundled": true,
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@@ -2030,6 +2069,7 @@
         "is-fullwidth-code-point": {
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           "bundled": true,
+          "optional": true,
           "requires": {
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           }
@@ -2042,17 +2082,20 @@
         "minimatch": {
           "version": "3.0.4",
           "bundled": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
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         "minimist": {
           "version": "0.0.8",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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           "version": "2.2.4",
           "bundled": true,
+          "optional": true,
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@@ -2069,6 +2112,7 @@
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
+          "optional": true,
           "requires": {
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@@ -2141,7 +2185,8 @@
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@@ -2151,6 +2196,7 @@
         "once": {
           "version": "1.4.0",
           "bundled": true,
+          "optional": true,
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@@ -2226,7 +2272,8 @@
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+          "bundled": true,
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@@ -2256,6 +2303,7 @@
         "string-width": {
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           "bundled": true,
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@@ -2273,6 +2321,7 @@
         "strip-ansi": {
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           "bundled": true,
+          "optional": true,
           "requires": {
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@@ -2311,11 +2360,13 @@
         },
         "wrappy": {
           "version": "1.0.2",
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+          "bundled": true,
+          "optional": true
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         "yallist": {
           "version": "3.0.2",
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@@ -2327,7 +2378,8 @@
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-      "integrity": "sha1-3BXKHGcjh8p2vTesCjlbogQqLCg="
+      "integrity": "sha1-3BXKHGcjh8p2vTesCjlbogQqLCg=",
+      "optional": true
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@@ -2432,6 +2484,7 @@
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       "integrity": "sha1-GLKB2lhbHFxR3vJMkw7SmgvmsXc=",
+      "optional": true,
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@@ -2441,7 +2494,8 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
+          "optional": true
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@@ -2449,6 +2503,7 @@
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       "integrity": "sha1-lbC2P+whRmGab+V/51Yo1aOe/k8=",
+      "optional": true,
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@@ -2458,6 +2513,7 @@
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           "integrity": "sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=",
+          "optional": true,
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@@ -2466,6 +2522,7 @@
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               "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
+              "optional": true,
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@@ -2476,6 +2533,7 @@
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           "integrity": "sha1-IIE989cSkosgc3hpGkUGb65y3Vc=",
+          "optional": true,
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@@ -3112,7 +3170,8 @@
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       "resolved": "https://registry.npmjs.org/hoek/-/hoek-2.16.3.tgz",
-      "integrity": "sha1-ILt0A9POo5jpHcRxCo/xuCdKJe0="
+      "integrity": "sha1-ILt0A9POo5jpHcRxCo/xuCdKJe0=",
+      "optional": true
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@@ -3259,6 +3318,7 @@
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       "integrity": "sha1-qeEss66Nh2cn7u84Q/igiXtcmNY=",
+      "optional": true,
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@@ -3280,6 +3340,7 @@
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@@ -5841,12 +5957,14 @@
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@@ -5885,7 +6004,8 @@
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