diff --git a/demo/package-lock.json b/demo/package-lock.json
index d5e8c53..6b0e576 100644
--- a/demo/package-lock.json
+++ b/demo/package-lock.json
@@ -1963,7 +1963,8 @@
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@@ -1984,12 +1985,14 @@
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           "version": "1.0.0",
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -2004,17 +2007,20 @@
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+          "dev": true,
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@@ -2131,7 +2137,8 @@
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-          "dev": true
+          "dev": true,
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@@ -2143,6 +2150,7 @@
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@@ -2157,6 +2165,7 @@
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@@ -2164,12 +2173,14 @@
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+          "dev": true,
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@@ -2188,6 +2199,7 @@
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@@ -2268,7 +2280,8 @@
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@@ -2280,6 +2293,7 @@
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@@ -2365,7 +2379,8 @@
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@@ -2401,6 +2416,7 @@
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           "bundled": true,
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@@ -2420,6 +2436,7 @@
           "version": "3.0.1",
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+          "optional": true,
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@@ -2463,12 +2480,14 @@
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           "version": "1.0.2",
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+          "dev": true,
+          "optional": true
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           "version": "3.0.3",
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@@ -3184,9 +3203,9 @@
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-      "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==",
+      "version": "4.17.19",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz",
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@@ -3566,14 +3585,16 @@
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-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.5.5.tgz",
+          "integrity": "sha512-27d4lZoomVyo51VegxI20xZPuSHusqbQag/ztrBC7wegWoQ1nLREPVSKSW8byhTlzTKyNE4ifaTA6lCp7JjpFw==",
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@@ -3582,29 +3603,34 @@
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-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
+          "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
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-          "bundled": true
+          "resolved": "https://registry.npmjs.org/async/-/async-0.9.2.tgz",
+          "integrity": "sha1-rqdNXmHB+JlhO/ZL2mbUx48v0X0="
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         "balanced-match": {
           "version": "1.0.0",
-          "bundled": true
+          "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+          "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
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-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
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@@ -3612,11 +3638,13 @@
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+          "integrity": "sha1-Jw8HbFpywC9bZaR9+Uxf46J4iS8="
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-          "bundled": true,
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@@ -3625,62 +3653,76 @@
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-          "bundled": true
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-          "bundled": true
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-          "bundled": true
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-          "bundled": true
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@@ -3692,15 +3734,18 @@
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+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
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-          "bundled": true,
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+          "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
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@@ -3708,19 +3753,23 @@
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@@ -3728,52 +3777,62 @@
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-          "bundled": true
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