diff --git a/package-lock.json b/package-lock.json
index da5bd8b..51505f9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -98,7 +98,8 @@
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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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@@ -113,7 +114,8 @@
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-      "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c="
+      "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c=",
+      "optional": true
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@@ -128,7 +130,8 @@
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-      "integrity": "sha1-ri1acpR38onWDdf5amMUoi3Wwio="
+      "integrity": "sha1-ri1acpR38onWDdf5amMUoi3Wwio=",
+      "optional": true
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@@ -248,6 +251,7 @@
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+      "optional": true,
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@@ -262,6 +266,7 @@
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           "integrity": "sha1-dp66rz9KY6rTr56NMEybvnm/sOY=",
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@@ -270,6 +275,7 @@
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+          "optional": true,
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@@ -278,6 +284,7 @@
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+          "optional": true,
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@@ -286,6 +293,7 @@
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@@ -295,12 +303,14 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
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@@ -382,7 +393,8 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
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           "integrity": "sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=",
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@@ -480,7 +494,8 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
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@@ -513,6 +528,7 @@
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       "integrity": "sha1-S8A3PBZLwykbTTaMgpzxqApZ3KA=",
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@@ -539,7 +555,8 @@
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-      "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY="
+      "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=",
+      "optional": true
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@@ -596,7 +613,8 @@
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       "resolved": "https://registry.npmjs.org/copy-descriptor/-/copy-descriptor-0.1.1.tgz",
-      "integrity": "sha1-Z29us8OZl8LuGsOpJP1hJHSPV40="
+      "integrity": "sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=",
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@@ -664,12 +682,14 @@
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-      "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU="
+      "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=",
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@@ -679,6 +699,7 @@
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@@ -687,6 +708,7 @@
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+          "optional": true,
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@@ -695,6 +717,7 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
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+          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==",
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       "integrity": "sha1-Jqcarwc7OfshJxcnRhMcJwQCjbg=",
+      "optional": true,
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@@ -835,6 +861,7 @@
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@@ -897,6 +924,7 @@
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@@ -928,7 +956,8 @@
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@@ -946,11 +975,13 @@
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+          "bundled": true,
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@@ -963,15 +994,18 @@
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@@ -1074,7 +1108,8 @@
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@@ -1084,6 +1119,7 @@
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@@ -1096,17 +1132,20 @@
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           "bundled": true,
+          "optional": true,
           "requires": {
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         "minimist": {
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-          "bundled": true
+          "bundled": true,
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@@ -1123,6 +1162,7 @@
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@@ -1195,7 +1235,8 @@
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@@ -1205,6 +1246,7 @@
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           "bundled": true,
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@@ -1280,7 +1322,8 @@
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@@ -1310,6 +1353,7 @@
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@@ -1327,6 +1371,7 @@
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@@ -1365,18 +1410,21 @@
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-      "integrity": "sha1-3BXKHGcjh8p2vTesCjlbogQqLCg="
+      "integrity": "sha1-3BXKHGcjh8p2vTesCjlbogQqLCg=",
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       "integrity": "sha1-C17mSDiOLIYCgueT8YVv7D8wG1Y=",
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+      "integrity": "sha1-wyq9C9ZSXZsFFkW7TyasXcmKDb8=",
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@@ -3787,12 +3893,14 @@
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-          "integrity": "sha1-bWHeldkd/Km5oCCJrThL/49it3E="
+          "integrity": "sha1-bWHeldkd/Km5oCCJrThL/49it3E=",
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
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@@ -3810,12 +3918,14 @@
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       "resolved": "https://registry.npmjs.org/urix/-/urix-0.1.0.tgz",
-      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI="
+      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
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@@ -3823,7 +3933,8 @@
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+          "optional": true
         }
       }
     },