diff --git a/package-lock.json b/package-lock.json
index f86df1ab..adc4556a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -554,17 +554,6 @@
       "resolved": "https://registry.npmjs.org/classnames/-/classnames-2.2.6.tgz",
       "integrity": "sha512-JR/iSQOSt+LQIWwrwEzJ9uk0xfN3mTVYMwt1Ir5mUcSN6pU+V4zQFFaJsclJbPuAUQH+yfWef6tm7l1quW3C8Q=="
     },
-    "clipboard": {
-      "version": "2.0.6",
-      "resolved": "https://registry.npmjs.org/clipboard/-/clipboard-2.0.6.tgz",
-      "integrity": "sha512-g5zbiixBRk/wyKakSwCKd7vQXDjFnAMGHoEyBogG/bw9kTD9GvdAvaoRR1ALcEzt3pVKxZR0pViekPMIS0QyGg==",
-      "optional": true,
-      "requires": {
-        "good-listener": "^1.2.2",
-        "select": "^1.1.2",
-        "tiny-emitter": "^2.0.0"
-      }
-    },
     "co": {
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
@@ -716,12 +705,6 @@
       "resolved": "https://registry.npmjs.org/decko/-/decko-1.2.0.tgz",
       "integrity": "sha1-/UPHNelnuAEzBohKVvvmZZlraBc="
     },
-    "delegate": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/delegate/-/delegate-3.2.0.tgz",
-      "integrity": "sha512-IofjkYBZaZivn0V8nnsMJGBr4jVLxHDheKSW88PyxS5QC4Vo9ZbZVvhzlSxY87fVq3STR6r+4cGepyHkcWOQSw==",
-      "optional": true
-    },
     "des.js": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/des.js/-/des.js-1.0.1.tgz",
@@ -891,15 +874,6 @@
       "resolved": "https://registry.npmjs.org/globals/-/globals-11.12.0.tgz",
       "integrity": "sha512-WOBp/EEGUiIsJSp7wcv/y6MO+lV9UoncWqxuFfm8eBwzWNgyfBd6Gz+IeKQ9jCmyhoH99g15M3T+QaVHFjizVA=="
     },
-    "good-listener": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/good-listener/-/good-listener-1.2.2.tgz",
-      "integrity": "sha1-1TswzfkxPf+33JoNR3CWqm0UXFA=",
-      "optional": true,
-      "requires": {
-        "delegate": "^3.1.2"
-      }
-    },
     "grapheme-splitter": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/grapheme-splitter/-/grapheme-splitter-1.0.4.tgz",
@@ -1666,12 +1640,9 @@
       "integrity": "sha512-pISE66AbVkp4fDQ7VHBwRNXzAAKJjw4Vw7nWI/+Q3vuly7SNfgYXvm6i5IgFylHGK5sP/xHAbB7N49OS4gWNyQ=="
     },
     "prismjs": {
-      "version": "1.19.0",
-      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.19.0.tgz",
-      "integrity": "sha512-IVFtbW9mCWm9eOIaEkNyo2Vl4NnEifis2GQ7/MLRG5TQe6t+4Sj9J5QWI9i3v+SS43uZBlCAOn+zYTVYQcPXJw==",
-      "requires": {
-        "clipboard": "^2.0.0"
-      }
+      "version": "1.26.0",
+      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.26.0.tgz",
+      "integrity": "sha512-HUoH9C5Z3jKkl3UunCyiD5jwk0+Hz0fIgQ2nbwU2Oo/ceuTAQAg+pPVnfdt2TJWRVLcxKh9iuoYDUSc8clb5UQ=="
     },
     "process": {
       "version": "0.11.10",
@@ -2066,12 +2037,6 @@
         "object-assign": "^4.1.1"
       }
     },
-    "select": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/select/-/select-1.1.2.tgz",
-      "integrity": "sha1-DnNQrN7ICxEIUoeG7B1EGNEbOW0=",
-      "optional": true
-    },
     "semver": {
       "version": "5.7.1",
       "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
@@ -2688,12 +2653,6 @@
         "setimmediate": "^1.0.4"
       }
     },
-    "tiny-emitter": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/tiny-emitter/-/tiny-emitter-2.1.0.tgz",
-      "integrity": "sha512-NB6Dk1A9xgQPMoGqC5CVXn123gWyte215ONT5Pp5a0yt4nlEoO1ZWeCwpncaekPHXO60i47ihFnZPiRPjRMq4Q==",
-      "optional": true
-    },
     "to-arraybuffer": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/to-arraybuffer/-/to-arraybuffer-1.0.1.tgz",