diff --git a/.eslintrc.json b/.eslintrc.json
index 887c7b26..8145e40c 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -85,7 +85,7 @@
     "no-mixed-spaces-and-tabs": "error",
     "no-multi-spaces": "error",
     "no-multi-str": "error",
-    "no-multiple-empty-lines": ["error", { "max": 1, "maxEOF": 0 }],
+    "no-multiple-empty-lines": ["error", { "max": 2, "maxEOF": 0 }],
     "no-negated-in-lhs": "error",
     "no-new": "error",
     "no-new-func": "error",
diff --git a/src/install.rdf b/src/install.rdf
index a1842333..55a13de6 100644
--- a/src/install.rdf
+++ b/src/install.rdf
@@ -7,21 +7,21 @@
         <em:id>markdown-here@adam.pritchard</em:id>
         <em:version>2.13.3</em:version>
 
+        <!-- Firefox -->
         <em:targetApplication>
             <Description>
-                <!-- Firefox -->
                 <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
                 <em:minVersion>11.0</em:minVersion>
                 <em:maxVersion>49.*</em:maxVersion>
             </Description>
         </em:targetApplication>
 
-        <!-- Postbox -->
+        <!-- Thunderbird -->
         <em:targetApplication>
           <Description>
-            <em:id>postbox@postbox-inc.com</em:id>
-            <em:minVersion>2.0</em:minVersion>
-            <em:maxVersion>5.*</em:maxVersion>
+            <em:id>{3550f703-e582-4d05-9a08-453d09bdfdc6}</em:id>
+            <em:minVersion>6.0</em:minVersion>
+            <em:maxVersion>60.*</em:maxVersion>
           </Description>
         </em:targetApplication>
 
diff --git a/utils/build.js b/utils/build.js
index 9b726311..9274aab3 100644
--- a/utils/build.js
+++ b/utils/build.js
@@ -7,7 +7,6 @@
 "use strict";
 
 var fs = require('fs');
-var path = require('path');
 var file = require('file');
 var archiver = require('archiver');
 var MetaScript = require('MetaScript');
@@ -60,16 +59,18 @@ function fnameMatch(fpath, inputArray) {
 
 // Add a file to the Chrome extension zip
 function addBuildFile(platformName, zip, fullPath, zipPath) {
+  var fileContents;
+
   // For the Mozilla extensions in particular, we need to do some preprocessing on JavaScript files
   // in order to exclude code specific to other platforms.
   if (javascriptFileRegex.test(fullPath)) {
-    var fileContents = fs.readFileSync(fullPath);
+    fileContents = fs.readFileSync(fullPath);
     fileContents = MetaScript.transform(fileContents, {platform: platformName});
     zip.append(fileContents, { name: zipPath });
   }
   else if (platformName === CHROME_PLATFORM && manifestJsonFileRegex.test(fullPath)) {
     // Remove the Firefox-specific stuff from manifest.json when building for Chrome.
-    var fileContents = fs.readFileSync(fullPath, {encoding: 'utf8'});
+    fileContents = fs.readFileSync(fullPath, {encoding: 'utf8'});
     fileContents = fileContents.replace(/,"applications":[^{]*{[^{]*{[^}]*}[^}]*}/m, '');
     zip.append(fileContents, { name: zipPath });
   }
@@ -96,8 +97,8 @@ function setUpZips() {
   }
 
   var chromeZip = new archiver('zip'); // Chrome will reject the zip if there's no compression
-  var firefoxZip = new archiver('zip', {store: true});
-  var thunderbirdZip = new archiver('zip', {store: true});
+  var firefoxZip = new archiver('zip');
+  var thunderbirdZip = new archiver('zip'); // addons.thunderbird.net rejects the xpi if there's no compression
 
   chromeZip.on('error', function(err) {
     console.log('chromeZip error:', err);
@@ -121,7 +122,7 @@ function setUpZips() {
   return {
     chrome: chromeZip,
     firefox: firefoxZip,
-    thunderbird: thunderbirdZip,
+    thunderbird: thunderbirdZip
   };
 }
 
diff --git a/utils/package-lock.json b/utils/package-lock.json
index fdc80d6f..88d40dfe 100644
--- a/utils/package-lock.json
+++ b/utils/package-lock.json
@@ -2,212 +2,468 @@
   "name": "markdown-here-utils",
   "version": "0.0.0",
   "lockfileVersion": 1,
+  "requires": true,
   "dependencies": {
     "archiver": {
-      "version": "https://registry.npmjs.org/archiver/-/archiver-1.3.0.tgz",
-      "integrity": "sha1-TyGU1tj5nfP1MeaIHxTxXVX6ryI="
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/archiver/-/archiver-3.0.0.tgz",
+      "integrity": "sha512-5QeR6Xc5hSA9X1rbQfcuQ6VZuUXOaEdB65Dhmk9duuRJHYif/ZyJfuyJqsQrj34PFjU5emv5/MmfgA8un06onw==",
+      "requires": {
+        "archiver-utils": "^2.0.0",
+        "async": "^2.0.0",
+        "buffer-crc32": "^0.2.1",
+        "glob": "^7.0.0",
+        "readable-stream": "^2.0.0",
+        "tar-stream": "^1.5.0",
+        "zip-stream": "^2.0.1"
+      }
     },
     "archiver-utils": {
-      "version": "https://registry.npmjs.org/archiver-utils/-/archiver-utils-1.3.0.tgz",
-      "integrity": "sha1-5QtMCccL89aA4y/xt5lOn52JUXQ="
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/archiver-utils/-/archiver-utils-2.0.0.tgz",
+      "integrity": "sha512-JRBgcVvDX4Mwu2RBF8bBaHcQCSxab7afsxAPYDQ5W+19quIPP5CfKE7Ql+UHs9wYvwsaNR8oDuhtf5iqrKmzww==",
+      "requires": {
+        "glob": "^7.0.0",
+        "graceful-fs": "^4.1.0",
+        "lazystream": "^1.0.0",
+        "lodash.assign": "^4.2.0",
+        "lodash.defaults": "^4.2.0",
+        "lodash.difference": "^4.5.0",
+        "lodash.flatten": "^4.4.0",
+        "lodash.isplainobject": "^4.0.6",
+        "lodash.toarray": "^4.4.0",
+        "lodash.union": "^4.6.0",
+        "normalize-path": "^3.0.0",
+        "readable-stream": "^2.0.0"
+      }
     },
     "argparse": {
-      "version": "https://registry.npmjs.org/argparse/-/argparse-1.0.9.tgz",
-      "integrity": "sha1-c9g7wmP4bpf4zE9rrhsOkKfSLIY="
+      "version": "1.0.9",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.9.tgz",
+      "integrity": "sha1-c9g7wmP4bpf4zE9rrhsOkKfSLIY=",
+      "requires": {
+        "sprintf-js": "~1.0.2"
+      }
     },
     "ascli": {
-      "version": "https://registry.npmjs.org/ascli/-/ascli-0.3.0.tgz",
-      "integrity": "sha1-XmYjDlIZ/j6JUqTvtPIPrllqgTo="
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/ascli/-/ascli-0.3.0.tgz",
+      "integrity": "sha1-XmYjDlIZ/j6JUqTvtPIPrllqgTo=",
+      "requires": {
+        "colour": "^0.7.1",
+        "optjs": "^3.2.2"
+      }
     },
     "async": {
-      "version": "https://registry.npmjs.org/async/-/async-2.4.1.tgz",
-      "integrity": "sha1-YqVrJ5yYoR0JhwlqAcw+6463u9c="
+      "version": "2.6.1",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.1.tgz",
+      "integrity": "sha512-fNEiL2+AZt6AlAw/29Cr0UDe4sRAHCpEHh54WMz+Bb7QfNcFw4h3loofyJpLeQs4Yx7yuqu/2dLgM5hKOs6HlQ==",
+      "requires": {
+        "lodash": "^4.17.10"
+      }
     },
     "autolinker": {
-      "version": "https://registry.npmjs.org/autolinker/-/autolinker-0.15.3.tgz",
+      "version": "0.15.3",
+      "resolved": "https://registry.npmjs.org/autolinker/-/autolinker-0.15.3.tgz",
       "integrity": "sha1-NCQX2PLzRhsUzwkIjV7fh5HcmDI="
     },
     "balanced-match": {
-      "version": "https://registry.npmjs.org/balanced-match/-/balanced-match-0.4.2.tgz",
-      "integrity": "sha1-yz8+PHMtwPAe5wtAPzAuYddwmDg="
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+    },
+    "base64-js": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.0.tgz",
+      "integrity": "sha512-ccav/yGvoa80BQDljCxsmmQ3Xvx60/UpBIij5QN21W3wBi/hhIC9OoO+KLpu9IJTS9j4DRVJ3aDDF9cMSoa2lw=="
     },
     "bl": {
-      "version": "https://registry.npmjs.org/bl/-/bl-1.2.1.tgz",
-      "integrity": "sha1-ysMo977kVzDUBLaSID/LWQ4XLV4="
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/bl/-/bl-1.2.2.tgz",
+      "integrity": "sha512-e8tQYnZodmebYDWGH7KMRvtzKXaJHx3BbilrgZCfvyLUYdKpK1t5PSPmpkny/SgiTSCnjfLW7v5rlONXVFkQEA==",
+      "requires": {
+        "readable-stream": "^2.3.5",
+        "safe-buffer": "^5.1.1"
+      }
     },
     "brace-expansion": {
-      "version": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.7.tgz",
-      "integrity": "sha1-Pv/DxQ4ABTH7cg6v+A8K6O8jz1k="
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "requires": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "buffer": {
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.2.1.tgz",
+      "integrity": "sha512-c+Ko0loDaFfuPWiL02ls9Xd3GO3cPVmUobQ6t3rXNUk304u6hGq+8N/kFi+QEIKhzK3uwolVhLzszmfLmMLnqg==",
+      "requires": {
+        "base64-js": "^1.0.2",
+        "ieee754": "^1.1.4"
+      }
+    },
+    "buffer-alloc": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/buffer-alloc/-/buffer-alloc-1.2.0.tgz",
+      "integrity": "sha512-CFsHQgjtW1UChdXgbyJGtnm+O/uLQeZdtbDo8mfUgYXCHSM1wgrVxXm6bSyrUuErEb+4sYVGCzASBRot7zyrow==",
+      "requires": {
+        "buffer-alloc-unsafe": "^1.1.0",
+        "buffer-fill": "^1.0.0"
+      }
+    },
+    "buffer-alloc-unsafe": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/buffer-alloc-unsafe/-/buffer-alloc-unsafe-1.1.0.tgz",
+      "integrity": "sha512-TEM2iMIEQdJ2yjPJoSIsldnleVaAk1oW3DBVUykyOLsEsFmEc9kn+SFFPz+gl54KQNxlDnAwCXosOS9Okx2xAg=="
     },
     "buffer-crc32": {
-      "version": "https://registry.npmjs.org/buffer-crc32/-/buffer-crc32-0.2.13.tgz",
+      "version": "0.2.13",
+      "resolved": "https://registry.npmjs.org/buffer-crc32/-/buffer-crc32-0.2.13.tgz",
       "integrity": "sha1-DTM+PwDqxQqhRUq9MO+MKl2ackI="
     },
-    "buffer-shims": {
-      "version": "https://registry.npmjs.org/buffer-shims/-/buffer-shims-1.0.0.tgz",
-      "integrity": "sha1-mXjOMXOIxkmth5MCjDR37wRKi1E="
+    "buffer-fill": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/buffer-fill/-/buffer-fill-1.0.0.tgz",
+      "integrity": "sha1-+PeLdniYiO858gXNY39o5wISKyw="
     },
     "colour": {
-      "version": "https://registry.npmjs.org/colour/-/colour-0.7.1.tgz",
+      "version": "0.7.1",
+      "resolved": "https://registry.npmjs.org/colour/-/colour-0.7.1.tgz",
       "integrity": "sha1-nLFpkX7F0SwHNtPoaFdG3xyt93g="
     },
     "compress-commons": {
-      "version": "https://registry.npmjs.org/compress-commons/-/compress-commons-1.2.0.tgz",
-      "integrity": "sha1-WFhwku8g03y1i68AARLJJ4/3O58="
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/compress-commons/-/compress-commons-1.2.2.tgz",
+      "integrity": "sha1-UkqfEJA/OoEzibAiXSfEi7dRiQ8=",
+      "requires": {
+        "buffer-crc32": "^0.2.1",
+        "crc32-stream": "^2.0.0",
+        "normalize-path": "^2.0.0",
+        "readable-stream": "^2.0.0"
+      },
+      "dependencies": {
+        "normalize-path": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-2.1.1.tgz",
+          "integrity": "sha1-GrKLVW4Zg2Oowab35vogE3/mrtk=",
+          "requires": {
+            "remove-trailing-separator": "^1.0.1"
+          }
+        }
+      }
     },
     "concat-map": {
-      "version": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
       "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
     },
     "core-util-is": {
-      "version": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
     },
     "crc": {
-      "version": "https://registry.npmjs.org/crc/-/crc-3.4.4.tgz",
-      "integrity": "sha1-naHpgOO9RPxck79as9ozeNheRms="
+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/crc/-/crc-3.8.0.tgz",
+      "integrity": "sha512-iX3mfgcTMIq3ZKLIsVFAbv7+Mc10kxabAGQb8HvjA1o3T1PIYprbakQ65d3I+2HGHt6nSKkM9PYjgoJO2KcFBQ==",
+      "requires": {
+        "buffer": "^5.1.0"
+      }
     },
     "crc32-stream": {
-      "version": "https://registry.npmjs.org/crc32-stream/-/crc32-stream-2.0.0.tgz",
-      "integrity": "sha1-483TtN8xaN10494/u8t7KX/pCPQ="
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/crc32-stream/-/crc32-stream-2.0.0.tgz",
+      "integrity": "sha1-483TtN8xaN10494/u8t7KX/pCPQ=",
+      "requires": {
+        "crc": "^3.4.4",
+        "readable-stream": "^2.0.0"
+      }
     },
     "end-of-stream": {
-      "version": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.0.tgz",
-      "integrity": "sha1-epDYM+/abPpurA9JSduw+tOmMgY="
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.1.tgz",
+      "integrity": "sha512-1MkrZNvWTKCaigbn+W15elq2BB/L22nqrSY5DKlo3X6+vclJm8Bb5djXJBmEX6fS3+zCh/F4VBK5Z2KxJt4s2Q==",
+      "requires": {
+        "once": "^1.4.0"
+      }
     },
     "file": {
-      "version": "https://registry.npmjs.org/file/-/file-0.2.2.tgz",
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/file/-/file-0.2.2.tgz",
       "integrity": "sha1-w9/Y+M81Na5FXCtCPC5SY112tNM="
     },
+    "fs-constants": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs-constants/-/fs-constants-1.0.0.tgz",
+      "integrity": "sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow=="
+    },
     "fs.realpath": {
-      "version": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
       "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8="
     },
     "glob": {
-      "version": "https://registry.npmjs.org/glob/-/glob-7.1.2.tgz",
-      "integrity": "sha1-wZyd+aAocC1nhhI4SmVSQExjbRU="
+      "version": "7.1.3",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
+      "integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
+      "requires": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      }
     },
     "graceful-fs": {
-      "version": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.1.11.tgz",
+      "version": "4.1.11",
+      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.1.11.tgz",
       "integrity": "sha1-Dovf5NHduIVNZOBOp8AOKgJuVlg="
     },
+    "ieee754": {
+      "version": "1.1.12",
+      "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.1.12.tgz",
+      "integrity": "sha512-GguP+DRY+pJ3soyIiGPTvdiVXjZ+DbXOxGpXn3eMvNW4x4irjqXm4wHKscC+TfxSJ0yw/S1F24tqdMNsMZTiLA=="
+    },
     "inflight": {
-      "version": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
-      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk="
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
+      "requires": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
     },
     "inherits": {
-      "version": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
       "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
     },
     "isarray": {
-      "version": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
       "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
     },
     "lazystream": {
-      "version": "https://registry.npmjs.org/lazystream/-/lazystream-1.0.0.tgz",
-      "integrity": "sha1-9plf4PggOS9hOWvolGJAe7dxaOQ="
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/lazystream/-/lazystream-1.0.0.tgz",
+      "integrity": "sha1-9plf4PggOS9hOWvolGJAe7dxaOQ=",
+      "requires": {
+        "readable-stream": "^2.0.5"
+      }
     },
     "lodash": {
-      "version": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
-      "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
+      "version": "4.17.11",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
+      "integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg=="
+    },
+    "lodash.assign": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/lodash.assign/-/lodash.assign-4.2.0.tgz",
+      "integrity": "sha1-DZnzzNem0mHRm9rrkkUAXShYCOc="
+    },
+    "lodash.defaults": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/lodash.defaults/-/lodash.defaults-4.2.0.tgz",
+      "integrity": "sha1-0JF4cW/+pN3p5ft7N/bwgCJ0WAw="
+    },
+    "lodash.difference": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/lodash.difference/-/lodash.difference-4.5.0.tgz",
+      "integrity": "sha1-nMtOUF1Ia5FlE0V3KIWi3yf9AXw="
+    },
+    "lodash.flatten": {
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/lodash.flatten/-/lodash.flatten-4.4.0.tgz",
+      "integrity": "sha1-8xwiIlqWMtK7+OSt2+8kCqdlph8="
+    },
+    "lodash.isplainobject": {
+      "version": "4.0.6",
+      "resolved": "https://registry.npmjs.org/lodash.isplainobject/-/lodash.isplainobject-4.0.6.tgz",
+      "integrity": "sha1-fFJqUtibRcRcxpC4gWO+BJf1UMs="
+    },
+    "lodash.toarray": {
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/lodash.toarray/-/lodash.toarray-4.4.0.tgz",
+      "integrity": "sha1-JMS/zWsvuji/0FlNsRedjptlZWE="
+    },
+    "lodash.union": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/lodash.union/-/lodash.union-4.6.0.tgz",
+      "integrity": "sha1-SLtQiECfFvGCFmZkHETdGqrjzYg="
     },
     "lru-cache": {
-      "version": "https://registry.npmjs.org/lru-cache/-/lru-cache-2.7.3.tgz",
+      "version": "2.7.3",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-2.7.3.tgz",
       "integrity": "sha1-bUUk6LlV+V1PW1iFHOId1y+06VI="
     },
     "markdown-it": {
-      "version": "https://registry.npmjs.org/markdown-it/-/markdown-it-3.0.7.tgz",
-      "integrity": "sha1-GgCjLaFHK52hx5NeFdZD8NESWnA="
+      "version": "3.0.7",
+      "resolved": "https://registry.npmjs.org/markdown-it/-/markdown-it-3.0.7.tgz",
+      "integrity": "sha1-GgCjLaFHK52hx5NeFdZD8NESWnA=",
+      "requires": {
+        "argparse": "~ 1.0.0",
+        "autolinker": "~ 0.15.2",
+        "uc.micro": "~ 0.1.0"
+      }
     },
     "metascript": {
-      "version": "https://registry.npmjs.org/metascript/-/metascript-1.0.0.tgz",
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/metascript/-/metascript-1.0.0.tgz",
       "integrity": "sha1-k2oWnn/yq325+u6MdfvC58/As/U=",
+      "requires": {
+        "ascli": "~0.3",
+        "glob": "~3.2"
+      },
       "dependencies": {
         "glob": {
-          "version": "https://registry.npmjs.org/glob/-/glob-3.2.11.tgz",
-          "integrity": "sha1-Spc/Y1uRkPcV0QmH1cAP0oFevj0="
+          "version": "3.2.11",
+          "resolved": "https://registry.npmjs.org/glob/-/glob-3.2.11.tgz",
+          "integrity": "sha1-Spc/Y1uRkPcV0QmH1cAP0oFevj0=",
+          "requires": {
+            "inherits": "2",
+            "minimatch": "0.3"
+          }
         },
         "minimatch": {
-          "version": "https://registry.npmjs.org/minimatch/-/minimatch-0.3.0.tgz",
-          "integrity": "sha1-J12O2qxPG7MyZHIInnlJyDlGmd0="
+          "version": "0.3.0",
+          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-0.3.0.tgz",
+          "integrity": "sha1-J12O2qxPG7MyZHIInnlJyDlGmd0=",
+          "requires": {
+            "lru-cache": "2",
+            "sigmund": "~1.0.0"
+          }
         }
       }
     },
     "minimatch": {
-      "version": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-      "integrity": "sha1-UWbihkV/AzBgZL5Ul+jbsMPTIIM="
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "requires": {
+        "brace-expansion": "^1.1.7"
+      }
     },
     "normalize-path": {
-      "version": "https://registry.npmjs.org/normalize-path/-/normalize-path-2.1.1.tgz",
-      "integrity": "sha1-GrKLVW4Zg2Oowab35vogE3/mrtk="
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
+      "integrity": "sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA=="
     },
     "once": {
-      "version": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
-      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E="
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "requires": {
+        "wrappy": "1"
+      }
     },
     "optjs": {
-      "version": "https://registry.npmjs.org/optjs/-/optjs-3.2.2.tgz",
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/optjs/-/optjs-3.2.2.tgz",
       "integrity": "sha1-aabOicRCpEQDFBrS+bNwvVu29O4="
     },
     "path-is-absolute": {
-      "version": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
       "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18="
     },
     "process-nextick-args": {
-      "version": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-1.0.7.tgz",
-      "integrity": "sha1-FQ4gt1ZZCtP5EJPyWk8q2L/zC6M="
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.0.tgz",
+      "integrity": "sha512-MtEC1TqN0EU5nephaJ4rAtThHtC86dNN9qCuEhtshvpVBkAW5ZO7BASN9REnF9eoXGcRub+pFuKEpOHE+HbEMw=="
     },
     "readable-stream": {
-      "version": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.2.9.tgz",
-      "integrity": "sha1-z3jsb0ptHrQ9JkiMrJfwQudLf8g="
+      "version": "2.3.6",
+      "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+      "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+      "requires": {
+        "core-util-is": "~1.0.0",
+        "inherits": "~2.0.3",
+        "isarray": "~1.0.0",
+        "process-nextick-args": "~2.0.0",
+        "safe-buffer": "~5.1.1",
+        "string_decoder": "~1.1.1",
+        "util-deprecate": "~1.0.1"
+      }
     },
     "remove-trailing-separator": {
-      "version": "https://registry.npmjs.org/remove-trailing-separator/-/remove-trailing-separator-1.0.1.tgz",
-      "integrity": "sha1-YV67lq9VlVLUv0BXyENtSGq2PMQ="
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz",
+      "integrity": "sha1-wkvOKig62tW8P1jg1IJJuSN52O8="
     },
     "safe-buffer": {
-      "version": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.0.1.tgz",
-      "integrity": "sha1-0mPKVGls2KMGtcplUekt5XkY++c="
+      "version": "5.1.2",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+      "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
     },
     "sigmund": {
-      "version": "https://registry.npmjs.org/sigmund/-/sigmund-1.0.1.tgz",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/sigmund/-/sigmund-1.0.1.tgz",
       "integrity": "sha1-P/IfGYytIXX587eBhT/ZTQ0ZtZA="
     },
     "sprintf-js": {
-      "version": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
       "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw="
     },
     "string_decoder": {
-      "version": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.1.tgz",
-      "integrity": "sha1-YuIA8DmVWmgQ2N8KM//A8BNmLZg="
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
     },
     "tar-stream": {
-      "version": "https://registry.npmjs.org/tar-stream/-/tar-stream-1.5.4.tgz",
-      "integrity": "sha1-NlSc8E7RrumyowwBQyUiONr5QBY="
+      "version": "1.6.1",
+      "resolved": "https://registry.npmjs.org/tar-stream/-/tar-stream-1.6.1.tgz",
+      "integrity": "sha512-IFLM5wp3QrJODQFPm6/to3LJZrONdBY/otxcvDIQzu217zKye6yVR3hhi9lAjrC2Z+m/j5oDxMPb1qcd8cIvpA==",
+      "requires": {
+        "bl": "^1.0.0",
+        "buffer-alloc": "^1.1.0",
+        "end-of-stream": "^1.0.0",
+        "fs-constants": "^1.0.0",
+        "readable-stream": "^2.3.0",
+        "to-buffer": "^1.1.0",
+        "xtend": "^4.0.0"
+      }
+    },
+    "to-buffer": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/to-buffer/-/to-buffer-1.1.1.tgz",
+      "integrity": "sha512-lx9B5iv7msuFYE3dytT+KE5tap+rNYw+K4jVkb9R/asAb+pbBSM17jtunHplhBe6RRJdZx3Pn2Jph24O32mOVg=="
     },
     "uc.micro": {
-      "version": "https://registry.npmjs.org/uc.micro/-/uc.micro-0.1.0.tgz",
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/uc.micro/-/uc.micro-0.1.0.tgz",
       "integrity": "sha1-7aESHR/blhVO1v3oJHu724MzCMo="
     },
     "util-deprecate": {
-      "version": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
       "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
     },
-    "walkdir": {
-      "version": "https://registry.npmjs.org/walkdir/-/walkdir-0.0.11.tgz",
-      "integrity": "sha1-oW0CXrkxvQO1LzCMrtD0D86+lTI="
-    },
     "wrappy": {
-      "version": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "xtend": {
-      "version": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
       "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68="
     },
     "zip-stream": {
-      "version": "https://registry.npmjs.org/zip-stream/-/zip-stream-1.1.1.tgz",
-      "integrity": "sha1-Uha0i7tNJlH2TVxubwnrSnOZ1Vc="
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/zip-stream/-/zip-stream-2.0.1.tgz",
+      "integrity": "sha512-c+eUhhkDpaK87G/py74wvWLtz2kzMPNCCkUApkun50ssE0oQliIQzWpTnwjB+MTKVIf2tGzIgHyqW/Y+W77ecQ==",
+      "requires": {
+        "archiver-utils": "^2.0.0",
+        "compress-commons": "^1.2.0",
+        "readable-stream": "^2.0.0"
+      }
     }
   }
 }
diff --git a/utils/package.json b/utils/package.json
index 9f8a8a48..9243d38a 100644
--- a/utils/package.json
+++ b/utils/package.json
@@ -3,9 +3,9 @@
   "version": "0.0.0",
   "private": true,
   "dependencies": {
-    "archiver": "*",
+    "archiver": "^3.0.0",
     "file": "*",
-    "glob": "^7.1.2",
+    "glob": "^7.1.3",
     "markdown-it": "~3.0.5",
     "metascript": "~1.0.0"
   }