diff --git a/package-lock.json b/package-lock.json
index 0c1bb23..1ffa5ad 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -101,7 +101,8 @@
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       "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-      "dev": true
+      "dev": true,
+      "optional": true
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       "version": "3.2.1",
@@ -717,7 +718,8 @@
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       "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
       "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -1650,6 +1652,7 @@
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           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -2149,15 +2152,6 @@
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       "dev": true
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-    "jest-worker": {
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-      "resolved": "https://registry.npmjs.org/jest-worker/-/jest-worker-23.2.0.tgz",
-      "integrity": "sha1-+vcGqNo2+uYOsmlXJX+ntdjqArk=",
-      "dev": true,
-      "requires": {
-        "merge-stream": "^1.0.1"
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@@ -2346,9 +2340,9 @@
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-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
-      "integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==",
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
       "dev": true
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@@ -2525,6 +2519,7 @@
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       "dev": true,
+      "optional": true,
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         "yallist": "^3.0.0"
@@ -2534,7 +2529,8 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -3371,30 +3367,6 @@
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-    "rollup-plugin-uglify": {
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-      "resolved": "https://registry.npmjs.org/rollup-plugin-uglify/-/rollup-plugin-uglify-6.0.1.tgz",
-      "integrity": "sha512-Mo4fFTof41Ij401wGl7rJxir8b/I9fHfaNeLi9FQAa8aFatQdmvoWR5nEixTmdk8ycbB8p1owYGru+g+cvrH0Q==",
-      "dev": true,
-      "requires": {
-        "@babel/code-frame": "^7.0.0",
-        "jest-worker": "^23.2.0",
-        "serialize-javascript": "^1.5.0",
-        "uglify-js": "^3.4.9"
-      },
-      "dependencies": {
-        "uglify-js": {
-          "version": "3.4.9",
-          "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.4.9.tgz",
-          "integrity": "sha512-8CJsbKOtEbnJsTyv6LE6m6ZKniqMiFWmm9sRbopbkGs3gMPPfd3Fh8iIA4Ykv5MgaTbqHr4BaoGLJLZNhsrW1Q==",
-          "dev": true,
-          "requires": {
-            "commander": "~2.17.1",
-            "source-map": "~0.6.1"
-          }
-        }
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       "resolved": "https://registry.npmjs.org/rollup-pluginutils/-/rollup-pluginutils-2.3.3.tgz",
@@ -3588,12 +3560,6 @@
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       "dev": true
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-    "serialize-javascript": {
-      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-1.5.0.tgz",
-      "integrity": "sha512-Ga8c8NjAAp46Br4+0oZ2WxJCwIzwP60Gq1YPgU+39PiTVxyed/iKE/zyZI6+UlVYH5Q4PaQdHhcegIFPZTUfoQ==",
-      "dev": true
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     "set-blocking": {
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       "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",