diff --git a/package-lock.json b/package-lock.json
index be9cf08..97c3aee 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -163,7 +163,8 @@
     "ansi-regex": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
-      "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg="
+      "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+      "dev": true
     },
     "ansi-styles": {
       "version": "3.2.1",
@@ -472,17 +473,6 @@
         }
       }
     },
-    "cowsay": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/cowsay/-/cowsay-1.4.0.tgz",
-      "integrity": "sha512-rdg5k5PsHFVJheO/pmE3aDg2rUDDTfPJau6yYkZYlHFktUz+UxbE+IgnUAEyyCyv4noL5ltxXD0gZzmHPCy/9g==",
-      "requires": {
-        "get-stdin": "^5.0.1",
-        "optimist": "~0.6.1",
-        "string-width": "~2.1.1",
-        "strip-eof": "^1.0.0"
-      }
-    },
     "cp-file": {
       "version": "6.2.0",
       "resolved": "https://registry.npmjs.org/cp-file/-/cp-file-6.2.0.tgz",
@@ -795,11 +785,6 @@
       "integrity": "sha1-6td0q+5y4gQJQzoGY2YCPdaIekE=",
       "dev": true
     },
-    "get-stdin": {
-      "version": "5.0.1",
-      "resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-5.0.1.tgz",
-      "integrity": "sha1-Ei4WFZHiH/TFJTAwVpPyDmOTo5g="
-    },
     "getpass": {
       "version": "0.1.7",
       "resolved": "https://registry.npmjs.org/getpass/-/getpass-0.1.7.tgz",
@@ -978,7 +963,8 @@
     "is-fullwidth-code-point": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
-      "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8="
+      "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+      "dev": true
     },
     "is-regex": {
       "version": "1.0.4",
@@ -1364,7 +1350,8 @@
     "minimist": {
       "version": "0.0.10",
       "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
-      "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8="
+      "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=",
+      "dev": true
     },
     "mkdirp": {
       "version": "0.5.1",
@@ -1607,6 +1594,7 @@
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
       "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
+      "dev": true,
       "requires": {
         "minimist": "~0.0.1",
         "wordwrap": "~0.0.2"
@@ -1691,9 +1679,9 @@
       "dev": true
     },
     "path-parse": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.6.tgz",
-      "integrity": "sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==",
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.7.tgz",
+      "integrity": "sha512-LDJzPVEEEPR+y48z93A0Ed0yXb8pAByGWo/k5YYdYgpY2/2EsOsksJrq7lOHxryrVOn1ejG6oAp8ahvOIQD8sw==",
       "dev": true
     },
     "path-type": {
@@ -1990,6 +1978,7 @@
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
       "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+      "dev": true,
       "requires": {
         "is-fullwidth-code-point": "^2.0.0",
         "strip-ansi": "^4.0.0"
@@ -2019,6 +2008,7 @@
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
       "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+      "dev": true,
       "requires": {
         "ansi-regex": "^3.0.0"
       }
@@ -2029,11 +2019,6 @@
       "integrity": "sha1-IzTBjpx1n3vdVv3vfprj1YjmjtM=",
       "dev": true
     },
-    "strip-eof": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/strip-eof/-/strip-eof-1.0.0.tgz",
-      "integrity": "sha1-u0P/VZim6wXYm1n80SnJgzE2Br8="
-    },
     "strip-json-comments": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
@@ -2220,7 +2205,8 @@
     "wordwrap": {
       "version": "0.0.3",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc="
+      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
+      "dev": true
     },
     "wrap-ansi": {
       "version": "5.1.0",