diff --git a/package-lock.json b/package-lock.json
index 1a4f040..028f300 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -655,7 +655,7 @@
             "integrity": "sha512-YtnS0VEY+e2Khzsey/6mra9EoM6h/5gxaC0e3mcHpA5yfDxafhygytNmcJWodvUgyXzSiL5MSkPO6bQGgfliHw==",
             "dev": true,
             "requires": {
-                "source-map": "0.6.1"
+                "source-map": "^0.6.1"
             },
             "dependencies": {
                 "source-map": {
@@ -1328,7 +1328,8 @@
                 "ansi-regex": {
                     "version": "2.1.1",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "aproba": {
                     "version": "1.1.1",
@@ -1379,7 +1380,8 @@
                 "balanced-match": {
                     "version": "0.4.2",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "bcrypt-pbkdf": {
                     "version": "1.0.1",
@@ -1394,6 +1396,7 @@
                     "version": "0.0.9",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "inherits": "2.0.3"
                     }
@@ -1402,6 +1405,7 @@
                     "version": "2.10.1",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "hoek": "2.16.3"
                     }
@@ -1410,6 +1414,7 @@
                     "version": "1.1.7",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "balanced-match": "0.4.2",
                         "concat-map": "0.0.1"
@@ -1418,7 +1423,8 @@
                 "buffer-shims": {
                     "version": "1.0.0",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "caseless": {
                     "version": "0.12.0",
@@ -1435,12 +1441,14 @@
                 "code-point-at": {
                     "version": "1.1.0",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "combined-stream": {
                     "version": "1.0.5",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "delayed-stream": "1.0.0"
                     }
@@ -1448,22 +1456,26 @@
                 "concat-map": {
                     "version": "0.0.1",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "console-control-strings": {
                     "version": "1.1.0",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "core-util-is": {
                     "version": "1.0.2",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "cryptiles": {
                     "version": "2.0.5",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "boom": "2.10.1"
                     }
@@ -1503,7 +1515,8 @@
                 "delayed-stream": {
                     "version": "1.0.0",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "delegates": {
                     "version": "1.0.0",
@@ -1535,7 +1548,8 @@
                 "extsprintf": {
                     "version": "1.0.2",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "forever-agent": {
                     "version": "0.6.1",
@@ -1557,12 +1571,14 @@
                 "fs.realpath": {
                     "version": "1.0.0",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "fstream": {
                     "version": "1.0.11",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "graceful-fs": "4.1.11",
                         "inherits": "2.0.3",
@@ -1618,6 +1634,7 @@
                     "version": "7.1.2",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "fs.realpath": "1.0.0",
                         "inflight": "1.0.6",
@@ -1630,7 +1647,8 @@
                 "graceful-fs": {
                     "version": "4.1.11",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "har-schema": {
                     "version": "1.0.5",
@@ -1658,6 +1676,7 @@
                     "version": "3.1.3",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "boom": "2.10.1",
                         "cryptiles": "2.0.5",
@@ -1668,7 +1687,8 @@
                 "hoek": {
                     "version": "2.16.3",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "http-signature": {
                     "version": "1.1.1",
@@ -1685,6 +1705,7 @@
                     "version": "1.0.6",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "once": "1.4.0",
                         "wrappy": "1.0.2"
@@ -1693,7 +1714,8 @@
                 "inherits": {
                     "version": "2.0.3",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "ini": {
                     "version": "1.3.4",
@@ -1705,6 +1727,7 @@
                     "version": "1.0.0",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "number-is-nan": "1.0.1"
                     }
@@ -1718,7 +1741,8 @@
                 "isarray": {
                     "version": "1.0.0",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "isstream": {
                     "version": "0.1.2",
@@ -1791,12 +1815,14 @@
                 "mime-db": {
                     "version": "1.27.0",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "mime-types": {
                     "version": "2.1.15",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "mime-db": "1.27.0"
                     }
@@ -1805,6 +1831,7 @@
                     "version": "3.0.4",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "brace-expansion": "1.1.7"
                     }
@@ -1812,12 +1839,14 @@
                 "minimist": {
                     "version": "0.0.8",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "mkdirp": {
                     "version": "0.5.1",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "minimist": "0.0.8"
                     }
@@ -1872,7 +1901,8 @@
                 "number-is-nan": {
                     "version": "1.0.1",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "oauth-sign": {
                     "version": "0.8.2",
@@ -1890,6 +1920,7 @@
                     "version": "1.4.0",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "wrappy": "1.0.2"
                     }
@@ -1919,7 +1950,8 @@
                 "path-is-absolute": {
                     "version": "1.0.1",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "performance-now": {
                     "version": "0.2.0",
@@ -1930,7 +1962,8 @@
                 "process-nextick-args": {
                     "version": "1.0.7",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "punycode": {
                     "version": "1.4.1",
@@ -1968,6 +2001,7 @@
                     "version": "2.2.9",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "buffer-shims": "1.0.0",
                         "core-util-is": "1.0.2",
@@ -2012,6 +2046,7 @@
                     "version": "2.6.1",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "glob": "7.1.2"
                     }
@@ -2019,7 +2054,8 @@
                 "safe-buffer": {
                     "version": "5.0.1",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "semver": {
                     "version": "5.3.0",
@@ -2043,6 +2079,7 @@
                     "version": "1.0.9",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "hoek": "2.16.3"
                     }
@@ -2076,6 +2113,7 @@
                     "version": "1.0.2",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "code-point-at": "1.1.0",
                         "is-fullwidth-code-point": "1.0.0",
@@ -2086,6 +2124,7 @@
                     "version": "1.0.1",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "safe-buffer": "5.0.1"
                     }
@@ -2100,6 +2139,7 @@
                     "version": "3.0.1",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "ansi-regex": "2.1.1"
                     }
@@ -2114,6 +2154,7 @@
                     "version": "2.2.1",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "block-stream": "0.0.9",
                         "fstream": "1.0.11",
@@ -2169,7 +2210,8 @@
                 "util-deprecate": {
                     "version": "1.0.2",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "uuid": {
                     "version": "3.0.1",
@@ -2198,7 +2240,8 @@
                 "wrappy": {
                     "version": "1.0.2",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 }
             }
         },