diff --git a/curriculum/gulpfile.js b/curriculum/gulpfile.js
index 5b1b148c56..dd508a8e5c 100644
--- a/curriculum/gulpfile.js
+++ b/curriculum/gulpfile.js
@@ -5,7 +5,7 @@ const through2 = require('through2');
 const { locale } = require('../config/env.json');
 const { getChallengesForLang } = require('./getChallenges');
 const { testedLangs } = require('./utils');
-const lintMarkdown = require('./tools/lint');
+const lintMarkdown = require('../tools/lint/lint');
 
 /**
  * Tasks
diff --git a/curriculum/package-lock.json b/curriculum/package-lock.json
index cbe0040407..49a6b37ab4 100644
--- a/curriculum/package-lock.json
+++ b/curriculum/package-lock.json
@@ -5794,65 +5794,6 @@
         }
       }
     },
-    "cliui": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
-      "integrity": "sha512-PYeGSEmmHM6zvoef2w8TPzlrnNpXIjTipYK780YswmIP9vjxmd6Y2a3CB2Ks6/AU8NHjZugXvo8w3oWM2qnwXA==",
-      "dev": true,
-      "requires": {
-        "string-width": "^3.1.0",
-        "strip-ansi": "^5.2.0",
-        "wrap-ansi": "^5.1.0"
-      },
-      "dependencies": {
-        "ansi-regex": {
-          "version": "4.1.0",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
-          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
-          "dev": true
-        },
-        "ansi-styles": {
-          "version": "3.2.1",
-          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
-          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
-          "dev": true,
-          "requires": {
-            "color-convert": "^1.9.0"
-          }
-        },
-        "string-width": {
-          "version": "3.1.0",
-          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
-          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
-          "dev": true,
-          "requires": {
-            "emoji-regex": "^7.0.1",
-            "is-fullwidth-code-point": "^2.0.0",
-            "strip-ansi": "^5.1.0"
-          }
-        },
-        "strip-ansi": {
-          "version": "5.2.0",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
-          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
-          "dev": true,
-          "requires": {
-            "ansi-regex": "^4.1.0"
-          }
-        },
-        "wrap-ansi": {
-          "version": "5.1.0",
-          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz",
-          "integrity": "sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==",
-          "dev": true,
-          "requires": {
-            "ansi-styles": "^3.2.0",
-            "string-width": "^3.0.0",
-            "strip-ansi": "^5.0.0"
-          }
-        }
-      }
-    },
     "clone": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.2.tgz",
@@ -6636,12 +6577,6 @@
       "integrity": "sha1-2wQ1IcldfjA/2PNFvtwzSc+wcp4=",
       "dev": true
     },
-    "emoji-regex": {
-      "version": "7.0.3",
-      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
-      "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==",
-      "dev": true
-    },
     "encodeurl": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
@@ -6657,12 +6592,6 @@
         "once": "^1.4.0"
       }
     },
-    "entities": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/entities/-/entities-1.1.2.tgz",
-      "integrity": "sha512-f2LZMYl1Fzu7YSBKg+RoROelpOaNrcGmE9AZubeDfrCEia483oW4MI4VyFd5VNHIgQ/7qm1I0wUHK1eJnn2y2w==",
-      "dev": true
-    },
     "env-ci": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/env-ci/-/env-ci-3.2.0.tgz",
@@ -7924,28 +7853,28 @@
       "dependencies": {
         "abbrev": {
           "version": "1.1.1",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==",
           "dev": true,
           "optional": true
         },
         "ansi-regex": {
           "version": "2.1.1",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
           "dev": true,
           "optional": true
         },
         "aproba": {
           "version": "1.2.0",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw==",
           "dev": true,
           "optional": true
         },
         "are-we-there-yet": {
           "version": "1.1.4",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-u13KOCu5TwXhUZQ3PRb9O6HKEQ0=",
           "dev": true,
           "optional": true,
@@ -7956,14 +7885,14 @@
         },
         "balanced-match": {
           "version": "1.0.0",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
           "dev": true,
           "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
           "dev": true,
           "optional": true,
@@ -7979,35 +7908,35 @@
         },
         "code-point-at": {
           "version": "1.1.0",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
           "dev": true,
           "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
           "dev": true,
           "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
           "dev": true,
           "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
           "dev": true,
           "optional": true
         },
         "debug": {
           "version": "2.6.9",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
           "dev": true,
           "optional": true,
@@ -8017,21 +7946,21 @@
         },
         "deep-extend": {
           "version": "0.5.1",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha512-N8vBdOa+DF7zkRrDCsaOXoCs/E2fJfx9B9MrKnnSiHNh4ws7eSys6YQE4KvT1cecKmOASYQBhbKjeuDD9lT81w==",
           "dev": true,
           "optional": true
         },
         "delegates": {
           "version": "1.0.0",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=",
           "dev": true,
           "optional": true
         },
         "detect-libc": {
           "version": "1.0.3",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=",
           "dev": true,
           "optional": true
@@ -8046,14 +7975,14 @@
         },
         "fs.realpath": {
           "version": "1.0.0",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
           "dev": true,
           "optional": true
         },
         "gauge": {
           "version": "2.7.4",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
           "dev": true,
           "optional": true,
@@ -8070,7 +7999,7 @@
         },
         "glob": {
           "version": "7.1.2",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha512-MJTUg1kjuLeQCJ+ccE4Vpa6kKVXkPYJ2mOCQyUuKLcLQsdrMCpBPUi8qVE6+YuaJkozeA9NusTAw3hLr8Xe5EQ==",
           "dev": true,
           "optional": true,
@@ -8085,14 +8014,14 @@
         },
         "has-unicode": {
           "version": "2.0.1",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk=",
           "dev": true,
           "optional": true
         },
         "iconv-lite": {
           "version": "0.4.21",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha512-En5V9za5mBt2oUA03WGD3TwDv0MKAruqsuxstbMUZaj9W9k/m1CV/9py3l0L5kw9Bln8fdHQmzHSYtvpvTLpKw==",
           "dev": true,
           "optional": true,
@@ -8102,7 +8031,7 @@
         },
         "ignore-walk": {
           "version": "3.0.1",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha512-DTVlMx3IYPe0/JJcYP7Gxg7ttZZu3IInhuEhbchuqneY9wWe5Ojy2mXLBaQFUQmo0AW2r3qG7m1mg86js+gnlQ==",
           "dev": true,
           "optional": true,
@@ -8112,7 +8041,7 @@
         },
         "inflight": {
           "version": "1.0.6",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
           "dev": true,
           "optional": true,
@@ -8123,21 +8052,21 @@
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+          "resolved": false,
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           "dev": true,
           "optional": true
         },
         "ini": {
           "version": "1.3.5",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha512-RZY5huIKCMRWDUqZlEi72f/lmXKMvuszcMBduliQ3nnWbx9X/ZBQO7DijMEYS9EhHBb2qacRUMtC7svLwe0lcw==",
           "dev": true,
           "optional": true
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         "is-fullwidth-code-point": {
           "version": "1.0.0",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
           "dev": true,
           "optional": true,
@@ -8147,14 +8076,14 @@
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-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=",
           "dev": true,
           "optional": true
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           "version": "3.0.4",
-          "resolved": "",
+          "resolved": false,
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@@ -8164,7 +8093,7 @@
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+          "resolved": false,
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           "dev": true,
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@@ -8188,7 +8117,7 @@
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@@ -8198,14 +8127,14 @@
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           "dev": true,
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           "optional": true,
@@ -8217,7 +8146,7 @@
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@@ -8236,7 +8165,7 @@
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-          "resolved": "",
+          "resolved": false,
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           "dev": true,
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@@ -8247,14 +8176,14 @@
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           "optional": true,
@@ -8265,7 +8194,7 @@
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@@ -8278,21 +8207,21 @@
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+          "resolved": false,
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           "dev": true,
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+          "resolved": false,
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           "dev": true,
           "optional": true
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         "once": {
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-          "resolved": "",
+          "resolved": false,
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           "dev": true,
           "optional": true,
@@ -8302,21 +8231,21 @@
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         "os-homedir": {
           "version": "1.0.2",
-          "resolved": "",
+          "resolved": false,
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           "dev": true,
           "optional": true
         },
         "os-tmpdir": {
           "version": "1.0.2",
-          "resolved": "",
+          "resolved": false,
           "integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=",
           "dev": true,
           "optional": true
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           "version": "0.1.5",
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+          "resolved": false,
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@@ -8327,21 +8256,21 @@
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@@ -8354,7 +8283,7 @@
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@@ -8363,7 +8292,7 @@
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@@ -8379,7 +8308,7 @@
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@@ -8389,47 +8318,47 @@
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         "sax": {
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+          "resolved": false,
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           "dev": true,
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         "signal-exit": {
           "version": "3.0.2",
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@@ -8441,7 +8370,7 @@
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@@ -8461,21 +8390,21 @@
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@@ -8485,7 +8414,7 @@
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@@ -11256,15 +11185,6 @@
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@@ -12590,28 +12510,6 @@
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diff --git a/curriculum/package.json b/curriculum/package.json
index 4d804f2fdb..b63d646ba4 100644
--- a/curriculum/package.json
+++ b/curriculum/package.json
@@ -55,15 +55,12 @@
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     "live-server": "^1.2.1",
     "lodash": "^4.17.11",
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     "rx": "^4.1.0",
     "semantic-release": "^15.13.3",
-    "through2": "^3.0.1",
-    "validator": "^10.4.0",
-    "yargs": "^13.2.4"
+    "validator": "^10.4.0"
   },
   "keywords": [
     "challenges",
diff --git a/curriculum/tools/lint.js b/curriculum/tools/lint.js
deleted file mode 100644
index de47fc3758..0000000000
--- a/curriculum/tools/lint.js
+++ /dev/null
@@ -1,28 +0,0 @@
-const markdownlint = require('markdownlint');
-
-const lintYAML = require('./markdown-yaml');
-const lintConfig = require('./.markdownlintrc');
-const argv = require('yargs').argv;
-
-const isMDRE = /.*\.md$/;
-
-const files = argv._.filter(arg => isMDRE.test(arg));
-files.forEach(path => lint({ path: path }));
-
-function lint(file, next) {
-  const options = {
-    files: [file.path],
-    config: lintConfig,
-    customRules: [lintYAML]
-  };
-  markdownlint(options, function callback(err, result) {
-    const resultString = (result || '').toString();
-    if (resultString) {
-      process.exitCode = 1;
-      console.log(resultString);
-    }
-    if (next) next(err, file);
-  });
-}
-
-module.exports = lint;
diff --git a/package-lock.json b/package-lock.json
index 57c7984213..4effd6ac69 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1867,17 +1867,32 @@
         "json-schema-traverse": "^0.3.0"
       }
     },
+    "ansi-colors": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-1.1.0.tgz",
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+      "requires": {
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+    },
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       "dev": true
     },
+    "ansi-gray": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/ansi-gray/-/ansi-gray-0.1.1.tgz",
+      "integrity": "sha1-KWLPVOyXksSFEKPetSRDaGHvclE=",
+      "requires": {
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-      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-      "dev": true
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
     },
     "ansi-styles": {
       "version": "3.2.1",
@@ -1888,6 +1903,11 @@
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+      "resolved": "https://registry.npmjs.org/ansi-wrap/-/ansi-wrap-0.1.0.tgz",
+      "integrity": "sha1-qCJQ3bABXponyoLoLqYDu/pF768="
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-      "dev": true,
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         "micromatch": "^3.1.4",
         "normalize-path": "^2.1.1"
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     },
+    "append-buffer": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/append-buffer/-/append-buffer-1.0.2.tgz",
+      "integrity": "sha1-2CIM9GYIFSXv6lBhTz3mUU36WPE=",
+      "requires": {
+        "buffer-equal": "^1.0.0"
+      }
+    },
     "aproba": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
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       "dev": true
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+    "archy": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/archy/-/archy-1.0.0.tgz",
+      "integrity": "sha1-+cjBN1fMHde8N5rHeyxipcKGjEA="
+    },
     "are-we-there-yet": {
       "version": "1.1.5",
       "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz",
@@ -1932,20 +1964,33 @@
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-      "integrity": "sha1-1kYQdP6/7HHn4VI1dhoyml3HxSA=",
-      "dev": true
+      "integrity": "sha1-1kYQdP6/7HHn4VI1dhoyml3HxSA="
+    },
+    "arr-filter": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/arr-filter/-/arr-filter-1.1.2.tgz",
+      "integrity": "sha1-Q/3d0JHo7xGqTEXZzcGOLf8XEe4=",
+      "requires": {
+        "make-iterator": "^1.0.0"
+      }
     },
     "arr-flatten": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/arr-flatten/-/arr-flatten-1.1.0.tgz",
-      "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==",
-      "dev": true
+      "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg=="
+    },
+    "arr-map": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/arr-map/-/arr-map-2.0.2.tgz",
+      "integrity": "sha1-Onc0X/wc814qkYJWAfnljy4kysQ=",
+      "requires": {
+        "make-iterator": "^1.0.0"
+      }
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     "arr-union": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/arr-union/-/arr-union-3.1.0.tgz",
-      "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ=",
-      "dev": true
+      "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ="
     },
     "array-differ": {
       "version": "1.0.0",
@@ -1953,6 +1998,11 @@
       "integrity": "sha1-7/UuN1gknTO+QCuLuOVkuytdQDE=",
       "dev": true
     },
+    "array-each": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/array-each/-/array-each-1.0.1.tgz",
+      "integrity": "sha1-p5SvDAWrF1KEbudTofIRoFugxE8="
+    },
     "array-equal": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/array-equal/-/array-equal-1.0.0.tgz",
@@ -1993,6 +2043,37 @@
         "es-abstract": "^1.7.0"
       }
     },
+    "array-initial": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/array-initial/-/array-initial-1.1.0.tgz",
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@@ -4406,7 +4739,6 @@
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@@ -4421,8 +4753,15 @@
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-      "integrity": "sha1-gQaNKVqBQuwKxybG4iAMMPttXoA=",
-      "dev": true
+      "integrity": "sha1-gQaNKVqBQuwKxybG4iAMMPttXoA="
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+      "integrity": "sha1-xjMy9BXO3EsE2/5wz4NklMU8tEs=",
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@@ -4456,7 +4795,6 @@
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@@ -4491,6 +4829,15 @@
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+      "integrity": "sha1-C3gV/DIBxqaeFNuYzgmMFpNSWes=",
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@@ -4506,14 +4853,12 @@
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-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
-      "dev": true
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8="
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@@ -4523,25 +4868,21 @@
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@@ -4551,13 +4892,11 @@
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@@ -4567,37 +4906,31 @@
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@@ -4606,25 +4939,21 @@
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@@ -4633,13 +4962,11 @@
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@@ -4669,13 +4995,11 @@
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@@ -4684,7 +5008,6 @@
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@@ -4913,7 +5210,6 @@
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@@ -4945,43 +5239,36 @@
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@@ -4992,7 +5279,6 @@
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-      "dev": true
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@@ -5136,8 +5414,7 @@
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-      "dev": true
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@@ -5324,8 +5601,7 @@
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-      "integrity": "sha1-3BXKHGcjh8p2vTesCjlbogQqLCg=",
-      "dev": true
+      "integrity": "sha1-3BXKHGcjh8p2vTesCjlbogQqLCg="
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-      "dev": true,
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+    "glob-stream": {
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+      "integrity": "sha1-cEXJlBOz65SIjYOrRtC0BMx73eQ=",
+      "requires": {
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+        "glob": "^7.1.1",
+        "glob-parent": "^3.1.0",
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+      "integrity": "sha1-dkpaEa9QVhkhsTPztE5hhofg9cM="
+    },
+    "tiny-emitter": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/tiny-emitter/-/tiny-emitter-2.1.0.tgz",
+      "integrity": "sha512-NB6Dk1A9xgQPMoGqC5CVXn123gWyte215ONT5Pp5a0yt4nlEoO1ZWeCwpncaekPHXO60i47ihFnZPiRPjRMq4Q==",
+      "dev": true,
+      "optional": true
+    },
     "tmp": {
       "version": "0.0.33",
       "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.0.33.tgz",
@@ -10780,6 +11503,15 @@
       "integrity": "sha1-I2QN17QtAEM5ERQIIOXPRA5SHdE=",
       "dev": true
     },
+    "to-absolute-glob": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/to-absolute-glob/-/to-absolute-glob-2.0.2.tgz",
+      "integrity": "sha1-GGX0PZ50sIItufFFt4z/fQ98hJs=",
+      "requires": {
+        "is-absolute": "^1.0.0",
+        "is-negated-glob": "^1.0.0"
+      }
+    },
     "to-fast-properties": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
@@ -10790,7 +11522,6 @@
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       "resolved": "https://registry.npmjs.org/to-object-path/-/to-object-path-0.3.0.tgz",
       "integrity": "sha1-KXWIt7Dn4KwI4E5nL4XB9JmeF68=",
-      "dev": true,
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@@ -10799,7 +11530,6 @@
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           "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
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-          "dev": true,
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           }
@@ -10810,7 +11540,6 @@
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-      "dev": true,
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         "define-property": "^2.0.2",
         "extend-shallow": "^3.0.2",
@@ -10822,12 +11551,19 @@
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       "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-2.1.1.tgz",
       "integrity": "sha1-fIDBe53+vlmeJzZ+DU3VWQFB2zg=",
-      "dev": true,
       "requires": {
         "is-number": "^3.0.0",
         "repeat-string": "^1.6.1"
       }
     },
+    "to-through": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/to-through/-/to-through-2.0.0.tgz",
+      "integrity": "sha1-/JKtq6ByZHvAtn1rA2ZKoZUJOvY=",
+      "requires": {
+        "through2": "^2.0.3"
+      }
+    },
     "toposort": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/toposort/-/toposort-2.0.2.tgz",
@@ -10901,6 +11637,11 @@
       "dev": true,
       "optional": true
     },
+    "type": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/type/-/type-1.0.1.tgz",
+      "integrity": "sha512-MAM5dBMJCJNKs9E7JXo4CXRAansRfG0nlJxW7Wf6GZzSOvH31zClSaHdIMWLehe/EGMBkqeC55rrkaOr5Oo7Nw=="
+    },
     "type-check": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
@@ -10919,8 +11660,7 @@
     "typedarray": {
       "version": "0.0.6",
       "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
-      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
-      "dev": true
+      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
     },
     "uc.micro": {
       "version": "1.0.6",
@@ -10960,11 +11700,36 @@
       "integrity": "sha1-8pzr8B31F5ErtY/5xOUP3o4zMg0=",
       "dev": true
     },
+    "unc-path-regex": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/unc-path-regex/-/unc-path-regex-0.1.2.tgz",
+      "integrity": "sha1-5z3T17DXxe2G+6xrCufYxqadUPo="
+    },
+    "undertaker": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/undertaker/-/undertaker-1.2.1.tgz",
+      "integrity": "sha512-71WxIzDkgYk9ZS+spIB8iZXchFhAdEo2YU8xYqBYJ39DIUIqziK78ftm26eecoIY49X0J2MLhG4hr18Yp6/CMA==",
+      "requires": {
+        "arr-flatten": "^1.0.1",
+        "arr-map": "^2.0.0",
+        "bach": "^1.0.0",
+        "collection-map": "^1.0.0",
+        "es6-weak-map": "^2.0.1",
+        "last-run": "^1.1.0",
+        "object.defaults": "^1.0.0",
+        "object.reduce": "^1.0.0",
+        "undertaker-registry": "^1.0.0"
+      }
+    },
+    "undertaker-registry": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/undertaker-registry/-/undertaker-registry-1.0.1.tgz",
+      "integrity": "sha1-XkvaMI5KiirlhPm5pDWaSZglzFA="
+    },
     "union-value": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
       "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
-      "dev": true,
       "requires": {
         "arr-union": "^3.1.0",
         "get-value": "^2.0.6",
@@ -10976,7 +11741,6 @@
           "version": "2.0.1",
           "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
           "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
           "requires": {
             "is-extendable": "^0.1.0"
           }
@@ -10985,7 +11749,6 @@
           "version": "0.4.3",
           "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
           "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
           "requires": {
             "extend-shallow": "^2.0.1",
             "is-extendable": "^0.1.1",
@@ -11013,6 +11776,15 @@
         "imurmurhash": "^0.1.4"
       }
     },
+    "unique-stream": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/unique-stream/-/unique-stream-2.3.1.tgz",
+      "integrity": "sha512-2nY4TnBE70yoxHkDli7DMazpWiP7xMdCYqU2nBRO0UB+ZpEkGsSija7MvmvnZFUeC+mrgiUfcHSr3LmRFIg4+A==",
+      "requires": {
+        "json-stable-stringify-without-jsonify": "^1.0.1",
+        "through2-filter": "^3.0.0"
+      }
+    },
     "universal-user-agent": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/universal-user-agent/-/universal-user-agent-2.1.0.tgz",
@@ -11032,7 +11804,6 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unset-value/-/unset-value-1.0.0.tgz",
       "integrity": "sha1-g3aHP30jNRef+x5vw6jtDfyKtVk=",
-      "dev": true,
       "requires": {
         "has-value": "^0.3.1",
         "isobject": "^3.0.0"
@@ -11042,7 +11813,6 @@
           "version": "0.3.1",
           "resolved": "https://registry.npmjs.org/has-value/-/has-value-0.3.1.tgz",
           "integrity": "sha1-ex9YutpiyoJ+wKIHgCVlSEWZXh8=",
-          "dev": true,
           "requires": {
             "get-value": "^2.0.3",
             "has-values": "^0.1.4",
@@ -11053,7 +11823,6 @@
               "version": "2.1.0",
               "resolved": "https://registry.npmjs.org/isobject/-/isobject-2.1.0.tgz",
               "integrity": "sha1-8GVWEJaj8dou9GJy+BXIQNh+DIk=",
-              "dev": true,
               "requires": {
                 "isarray": "1.0.0"
               }
@@ -11063,11 +11832,15 @@
         "has-values": {
           "version": "0.1.4",
           "resolved": "https://registry.npmjs.org/has-values/-/has-values-0.1.4.tgz",
-          "integrity": "sha1-bWHeldkd/Km5oCCJrThL/49it3E=",
-          "dev": true
+          "integrity": "sha1-bWHeldkd/Km5oCCJrThL/49it3E="
         }
       }
     },
+    "upath": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/upath/-/upath-1.1.2.tgz",
+      "integrity": "sha512-kXpym8nmDmlCBr7nKdIx8P2jNBa+pBpIUFRnKJ4dr8htyYGJFokkr2ZvERRtUN+9SY+JqXouNgUPtv6JQva/2Q=="
+    },
     "uri-js": {
       "version": "4.2.2",
       "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
@@ -11088,8 +11861,7 @@
     "urix": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/urix/-/urix-0.1.0.tgz",
-      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
-      "dev": true
+      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI="
     },
     "url-template": {
       "version": "2.0.8",
@@ -11100,14 +11872,12 @@
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
-      "integrity": "sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ==",
-      "dev": true
+      "integrity": "sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ=="
     },
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
-      "dev": true
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
     },
     "util.promisify": {
       "version": "1.0.0",
@@ -11125,11 +11895,18 @@
       "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==",
       "dev": true
     },
+    "v8flags": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.1.3.tgz",
+      "integrity": "sha512-amh9CCg3ZxkzQ48Mhcb8iX7xpAfYJgePHxWMQCBWECpOSqJUXgY26ncA61UTV0BkPqfhcy6mzwCIoP4ygxpW8w==",
+      "requires": {
+        "homedir-polyfill": "^1.0.1"
+      }
+    },
     "validate-npm-package-license": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
       "integrity": "sha512-DpKm2Ui/xN7/HQKCtpZxoRWBhZ9Z0kqtygG8XCgNQ8ZlDnxuQmWhj566j8fN4Cu3/JmbhsDo7fcAJq4s9h27Ew==",
-      "dev": true,
       "requires": {
         "spdx-correct": "^3.0.0",
         "spdx-expression-parse": "^3.0.0"
@@ -11144,6 +11921,11 @@
         "builtins": "^1.0.3"
       }
     },
+    "value-or-function": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/value-or-function/-/value-or-function-3.0.0.tgz",
+      "integrity": "sha1-HCQ6ULWVwb5Up1S/7OhWO5/42BM="
+    },
     "verror": {
       "version": "1.10.0",
       "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
@@ -11155,6 +11937,64 @@
         "extsprintf": "^1.2.0"
       }
     },
+    "vinyl": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-2.2.0.tgz",
+      "integrity": "sha512-MBH+yP0kC/GQ5GwBqrTPTzEfiiLjta7hTtvQtbxBgTeSXsmKQRQecjibMbxIXzVT3Y9KJK+drOz1/k+vsu8Nkg==",
+      "requires": {
+        "clone": "^2.1.1",
+        "clone-buffer": "^1.0.0",
+        "clone-stats": "^1.0.0",
+        "cloneable-readable": "^1.0.0",
+        "remove-trailing-separator": "^1.0.1",
+        "replace-ext": "^1.0.0"
+      },
+      "dependencies": {
+        "clone": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.2.tgz",
+          "integrity": "sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18="
+        }
+      }
+    },
+    "vinyl-fs": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/vinyl-fs/-/vinyl-fs-3.0.3.tgz",
+      "integrity": "sha512-vIu34EkyNyJxmP0jscNzWBSygh7VWhqun6RmqVfXePrOwi9lhvRs//dOaGOTRUQr4tx7/zd26Tk5WeSVZitgng==",
+      "requires": {
+        "fs-mkdirp-stream": "^1.0.0",
+        "glob-stream": "^6.1.0",
+        "graceful-fs": "^4.0.0",
+        "is-valid-glob": "^1.0.0",
+        "lazystream": "^1.0.0",
+        "lead": "^1.0.0",
+        "object.assign": "^4.0.4",
+        "pumpify": "^1.3.5",
+        "readable-stream": "^2.3.3",
+        "remove-bom-buffer": "^3.0.0",
+        "remove-bom-stream": "^1.2.0",
+        "resolve-options": "^1.1.0",
+        "through2": "^2.0.0",
+        "to-through": "^2.0.0",
+        "value-or-function": "^3.0.0",
+        "vinyl": "^2.0.0",
+        "vinyl-sourcemap": "^1.1.0"
+      }
+    },
+    "vinyl-sourcemap": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/vinyl-sourcemap/-/vinyl-sourcemap-1.1.0.tgz",
+      "integrity": "sha1-kqgAWTo4cDqM2xHYswCtS+Y7PhY=",
+      "requires": {
+        "append-buffer": "^1.0.2",
+        "convert-source-map": "^1.5.0",
+        "graceful-fs": "^4.1.6",
+        "normalize-path": "^2.1.1",
+        "now-and-later": "^2.0.0",
+        "remove-bom-buffer": "^3.0.0",
+        "vinyl": "^2.0.0"
+      }
+    },
     "w3c-hr-time": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/w3c-hr-time/-/w3c-hr-time-1.0.1.tgz",
@@ -11227,7 +12067,6 @@
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
       "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
-      "dev": true,
       "requires": {
         "isexe": "^2.0.0"
       }
@@ -11266,7 +12105,6 @@
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
       "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
-      "dev": true,
       "requires": {
         "string-width": "^1.0.1",
         "strip-ansi": "^3.0.1"
@@ -11276,7 +12114,6 @@
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
           "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
-          "dev": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -11285,7 +12122,6 @@
           "version": "1.0.2",
           "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
           "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
-          "dev": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -11296,7 +12132,6 @@
           "version": "3.0.1",
           "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
-          "dev": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -11306,8 +12141,7 @@
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "write": {
       "version": "1.0.3",
@@ -11379,8 +12213,7 @@
     "xtend": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
-      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
-      "dev": true
+      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68="
     },
     "y18n": {
       "version": "4.0.0",
diff --git a/package.json b/package.json
index 5907c10a53..425451364c 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,7 @@
     "hooks:uninstall": "node node_modules/husky/husky.js uninstall",
     "lint": "npm-run-all -p lint:*",
     "lint:challenges": "cd ./curriculum && npm run lint",
+    "lint:guide": "cd ./tools/lint-guide/ && gulp lint",
     "lint:js": "eslint .",
     "lint:other": "npm run prettier -- --debug-check",
     "prettier": "prettier \"**/*.{md,css}\"",
@@ -62,10 +63,11 @@
     "lerna": "^3.14.1",
     "lint-staged": "^8.1.5",
     "lodash": "^4.17.11",
-    "markdownlint-cli": "^0.14.1",
+    "markdownlint": "^0.15.0",
     "npm-run-all": "^4.1.5",
     "ora": "^3.2.0",
     "prettier": "^1.16.4",
+    "prismjs": "^1.16.0",
     "readdirp-walk": "^1.7.0",
     "shortid": "^2.2.14",
     "shx": "^0.3.2",
@@ -79,7 +81,7 @@
         "eslint --fix",
         "git add"
       ],
-      "*.md": "node ./curriculum/tools/lint",
+      "*.md": "node ./tools/lint/lint.js",
       "*.{md,css}": [
         "prettier --write",
         "git add"
@@ -91,5 +93,8 @@
     "hooks": {
       "pre-commit": "lint-staged"
     }
+  },
+  "dependencies": {
+    "gulp": "^4.0.2"
   }
 }
diff --git a/tools/lint-guide/.guidelintrc.js b/tools/lint-guide/.guidelintrc.js
new file mode 100644
index 0000000000..f6d1906654
--- /dev/null
+++ b/tools/lint-guide/.guidelintrc.js
@@ -0,0 +1,8 @@
+// JS rather than JSON so comments can be included
+
+module.exports = {
+  "default": false,    // the guide has a more permissive set of rules
+  "MD031": true,       // fenced blocks do need surrounding by newlines
+  "MD040": true,       // code fence languages should be specificed
+  "prism-langs": true, // code fence languages should be supported by PrismJS
+}
diff --git a/tools/lint-guide/gulpfile.js b/tools/lint-guide/gulpfile.js
new file mode 100644
index 0000000000..c80b1f95ef
--- /dev/null
+++ b/tools/lint-guide/gulpfile.js
@@ -0,0 +1,27 @@
+const gulp = require('gulp');
+const through2 = require('through2');
+
+const { testedLangs } = require('../../curriculum/utils');
+const lintMarkdown = require('./lint-guide');
+
+/**
+ * Tasks
+ **/
+
+function lint() {
+  return gulp.src(globLangs(testedLangs()), { read: false }).pipe(
+    through2.obj(function obj(file, enc, next) {
+      lintMarkdown(file, next);
+    })
+  );
+}
+
+/**
+ * Helper functions
+ **/
+
+function globLangs(langs) {
+  return langs.map(lang => `../../guide/${lang}/**/*.md`);
+}
+
+gulp.task('lint', lint);
diff --git a/tools/lint-guide/lint-guide.js b/tools/lint-guide/lint-guide.js
new file mode 100644
index 0000000000..87a5692d20
--- /dev/null
+++ b/tools/lint-guide/lint-guide.js
@@ -0,0 +1,12 @@
+const lintRules = require('./.guidelintrc');
+const linter = require('../linter');
+const argv = require('yargs').argv;
+
+const isMDRE = /.*\.md$/;
+
+const lint = linter(lintRules);
+
+const files = argv._.filter(arg => isMDRE.test(arg));
+files.forEach(path => lint({ path: path }));
+
+module.exports = lint;
diff --git a/curriculum/tools/.markdownlintrc.js b/tools/lint/.markdownlintrc.js
similarity index 100%
rename from curriculum/tools/.markdownlintrc.js
rename to tools/lint/.markdownlintrc.js
diff --git a/curriculum/tools/fixtures/badFencing.md b/tools/lint/fixtures/badFencing.md
similarity index 100%
rename from curriculum/tools/fixtures/badFencing.md
rename to tools/lint/fixtures/badFencing.md
diff --git a/curriculum/tools/fixtures/badYML.md b/tools/lint/fixtures/badYML.md
similarity index 100%
rename from curriculum/tools/fixtures/badYML.md
rename to tools/lint/fixtures/badYML.md
diff --git a/curriculum/tools/fixtures/good.md b/tools/lint/fixtures/good.md
similarity index 100%
rename from curriculum/tools/fixtures/good.md
rename to tools/lint/fixtures/good.md
diff --git a/tools/lint/lint.js b/tools/lint/lint.js
new file mode 100644
index 0000000000..994af346d9
--- /dev/null
+++ b/tools/lint/lint.js
@@ -0,0 +1,12 @@
+const lintRules = require('./.markdownlintrc');
+const linter = require('../linter');
+const argv = require('yargs').argv;
+
+const isMDRE = /.*\.md$/;
+
+const lint = linter(lintRules);
+
+const files = argv._.filter(arg => isMDRE.test(arg));
+files.forEach(path => lint({ path: path }));
+
+module.exports = lint;
diff --git a/curriculum/tools/lint.test.js b/tools/lint/lint.test.js
similarity index 100%
rename from curriculum/tools/lint.test.js
rename to tools/lint/lint.test.js
diff --git a/tools/linter/index.js b/tools/linter/index.js
new file mode 100644
index 0000000000..ac371d1101
--- /dev/null
+++ b/tools/linter/index.js
@@ -0,0 +1,25 @@
+const markdownlint = require('markdownlint');
+
+const lintPrism = require('./markdown-prism');
+const lintYAML = require('./markdown-yaml');
+
+function linter(rules) {
+  const lint = (file, next) => {
+    const options = {
+      files: [file.path],
+      config: rules,
+      customRules: [lintYAML, lintPrism]
+    };
+    markdownlint(options, function callback(err, result) {
+      const resultString = (result || '').toString();
+      if (resultString) {
+        process.exitCode = 1;
+        console.log(resultString);
+      }
+      if (next) next(err, file);
+    });
+  };
+  return lint;
+}
+
+module.exports = linter;
diff --git a/tools/linter/markdown-prism.js b/tools/linter/markdown-prism.js
new file mode 100644
index 0000000000..3cfc3b88e5
--- /dev/null
+++ b/tools/linter/markdown-prism.js
@@ -0,0 +1,44 @@
+const components = require(`prismjs/components`);
+
+module.exports = {
+  names: ['prism-langs'],
+  description: 'Code block languages should be supported by PrismJS',
+  tags: ['prism'],
+  function: function rule(params, onError) {
+    params.tokens
+      .filter(param => param.type === 'fence')
+      .forEach(codeBlock => {
+        // whitespace around the language is ignored by the parser, as is case:
+        const baseLang = codeBlock.info.trim().toLowerCase();
+        const lang = getBaseLanguageName(baseLang);
+        // Rule MD040 checks if the block has a language, so this rule only
+        // comes into play if a language has been specified.
+        if (baseLang && !lang) {
+          onError({
+            lineNumber: codeBlock.lineNumber,
+            detail: `\'${baseLang}\' is not recognised.`
+          });
+        }
+      });
+  }
+};
+
+/*
+ * This is the method used by https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-remark-prismjs/src/load-prism-language.js
+ */
+
+// Get the real name of a language given it or an alias
+const getBaseLanguageName = nameOrAlias => {
+  if (components.languages[nameOrAlias]) {
+    return nameOrAlias;
+  }
+  return Object.keys(components.languages).find(language => {
+    const { alias } = components.languages[language];
+    if (!alias) return false;
+    if (Array.isArray(alias)) {
+      return alias.includes(nameOrAlias);
+    } else {
+      return alias === nameOrAlias;
+    }
+  });
+};
diff --git a/curriculum/tools/markdown-yaml.js b/tools/linter/markdown-yaml.js
similarity index 92%
rename from curriculum/tools/markdown-yaml.js
rename to tools/linter/markdown-yaml.js
index d8fc7d2eb8..6920bd1ea6 100644
--- a/curriculum/tools/markdown-yaml.js
+++ b/tools/linter/markdown-yaml.js
@@ -2,7 +2,7 @@ const yaml = require('js-yaml');
 
 module.exports = {
   names: ['yaml-linter'],
-  description: 'YAML code blocks must be valid',
+  description: 'YAML code blocks should be valid',
   tags: ['yaml'],
   function: function rule(params, onError) {
     params.tokens