diff --git a/package-lock.json b/package-lock.json
index 2ca71b6..36c47f2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -59,7 +59,8 @@
       "version": "1.0.9",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.0.9.tgz",
       "integrity": "sha1-kbR5JYinc4wl813W9jdSovh3YTU=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "acorn": {
       "version": "7.1.0",
@@ -184,16 +185,33 @@
       "optional": true
     },
     "handlebars": {
-      "version": "4.5.3",
-      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.5.3.tgz",
-      "integrity": "sha512-3yPecJoJHK/4c6aZhSvxOyG4vJKDshV36VHp0iVCDVh7o9w2vwi3NSnL2MMPj3YdduqaBcu7cGbggJQM0br9xA==",
+      "version": "4.7.7",
+      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.7.7.tgz",
+      "integrity": "sha512-aAcXm5OAfE/8IXkcZvCepKU3VzW1/39Fb5ZuqMtgI/hT8X2YgoMvBY5dLhq/cpOvw7Lk1nK/UF71aLG/ZnVYRA==",
       "dev": true,
       "optional": true,
       "requires": {
+        "minimist": "^1.2.5",
         "neo-async": "^2.6.0",
-        "optimist": "^0.6.1",
         "source-map": "^0.6.1",
-        "uglify-js": "^3.1.4"
+        "uglify-js": "^3.1.4",
+        "wordwrap": "^1.0.0"
+      },
+      "dependencies": {
+        "minimist": {
+          "version": "1.2.5",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
+          "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
+          "dev": true,
+          "optional": true
+        },
+        "wordwrap": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
+          "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
+          "dev": true,
+          "optional": true
+        }
       }
     },
     "has-flag": {
@@ -294,7 +312,8 @@
           "version": "2.7.3",
           "resolved": "https://registry.npmjs.org/esprima/-/esprima-2.7.3.tgz",
           "integrity": "sha1-luO3DVd59q1JzQMmc9HDEnZ7pYE=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "estraverse": {
           "version": "1.9.3",
@@ -381,7 +400,8 @@
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
           "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -423,7 +443,8 @@
       "version": "0.0.8",
       "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
       "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "mkdirp": {
       "version": "0.5.1",
@@ -472,19 +493,9 @@
       "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
       "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
       "dev": true,
-      "requires": {
-        "wrappy": "1"
-      }
-    },
-    "optimist": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "dev": true,
       "optional": true,
       "requires": {
-        "minimist": "~0.0.1",
-        "wordwrap": "~0.0.2"
+        "wrappy": "1"
       }
     },
     "path-is-absolute": {
@@ -503,7 +514,8 @@
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.1.2.tgz",
       "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "qunitjs": {
       "version": "2.1.1",
@@ -560,6 +572,7 @@
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
       "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
       "dev": true,
+      "optional": true,
       "requires": {
         "prelude-ls": "~1.1.2"
       }
@@ -591,18 +604,12 @@
         "isexe": "^2.0.0"
       }
     },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true,
-      "optional": true
-    },
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
+      "dev": true,
+      "optional": true
     }
   }
 }