diff --git a/package-lock.json b/package-lock.json
index 2a91c38..f50f782 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -827,7 +827,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.1.1",
@@ -878,7 +879,8 @@
         "balanced-match": {
           "version": "0.4.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "bcrypt-pbkdf": {
           "version": "1.0.1",
@@ -893,6 +895,7 @@
           "version": "0.0.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "inherits": "2.0.3"
           }
@@ -901,6 +904,7 @@
           "version": "2.10.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "hoek": "2.16.3"
           }
@@ -909,6 +913,7 @@
           "version": "1.1.7",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "0.4.2",
             "concat-map": "0.0.1"
@@ -917,7 +922,8 @@
         "buffer-shims": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "caseless": {
           "version": "0.12.0",
@@ -934,12 +940,14 @@
         "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"
           }
@@ -947,22 +955,26 @@
         "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"
           }
@@ -1002,7 +1014,8 @@
         "delayed-stream": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "delegates": {
           "version": "1.0.0",
@@ -1033,8 +1046,7 @@
         },
         "extsprintf": {
           "version": "1.0.2",
-          "bundled": true,
-          "dev": true
+          "bundled": true
         },
         "forever-agent": {
           "version": "0.6.1",
@@ -1056,12 +1068,14 @@
         "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",
@@ -1117,6 +1131,7 @@
           "version": "7.1.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "fs.realpath": "1.0.0",
             "inflight": "1.0.6",
@@ -1129,7 +1144,8 @@
         "graceful-fs": {
           "version": "4.1.11",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "har-schema": {
           "version": "1.0.5",
@@ -1157,6 +1173,7 @@
           "version": "3.1.3",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "boom": "2.10.1",
             "cryptiles": "2.0.5",
@@ -1167,7 +1184,8 @@
         "hoek": {
           "version": "2.16.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "http-signature": {
           "version": "1.1.1",
@@ -1184,6 +1202,7 @@
           "version": "1.0.6",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "once": "1.4.0",
             "wrappy": "1.0.2"
@@ -1192,7 +1211,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.4",
@@ -1204,6 +1224,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "1.0.1"
           }
@@ -1217,7 +1238,8 @@
         "isarray": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "isstream": {
           "version": "0.1.2",
@@ -1242,9 +1264,7 @@
         },
         "json-schema": {
           "version": "0.2.3",
-          "bundled": true,
-          "dev": true,
-          "optional": true
+          "bundled": true
         },
         "json-stable-stringify": {
           "version": "1.0.1",
@@ -1267,35 +1287,17 @@
           "dev": true,
           "optional": true
         },
-        "jsprim": {
-          "version": "1.4.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "assert-plus": "1.0.0",
-            "extsprintf": "1.0.2",
-            "json-schema": "0.2.3",
-            "verror": "1.3.6"
-          },
-          "dependencies": {
-            "assert-plus": {
-              "version": "1.0.0",
-              "bundled": true,
-              "dev": true,
-              "optional": true
-            }
-          }
-        },
         "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"
           }
@@ -1304,6 +1306,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "1.1.7"
           }
@@ -1311,12 +1314,14 @@
         "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"
           }
@@ -1371,7 +1376,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "oauth-sign": {
           "version": "0.8.2",
@@ -1389,6 +1395,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1.0.2"
           }
@@ -1418,7 +1425,8 @@
         "path-is-absolute": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "performance-now": {
           "version": "0.2.0",
@@ -1429,7 +1437,8 @@
         "process-nextick-args": {
           "version": "1.0.7",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "punycode": {
           "version": "1.4.1",
@@ -1467,6 +1476,7 @@
           "version": "2.2.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "buffer-shims": "1.0.0",
             "core-util-is": "1.0.2",
@@ -1511,6 +1521,7 @@
           "version": "2.6.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "glob": "7.1.2"
           }
@@ -1518,7 +1529,8 @@
         "safe-buffer": {
           "version": "5.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "semver": {
           "version": "5.3.0",
@@ -1542,6 +1554,7 @@
           "version": "1.0.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "hoek": "2.16.3"
           }
@@ -1575,6 +1588,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "1.1.0",
             "is-fullwidth-code-point": "1.0.0",
@@ -1585,6 +1599,7 @@
           "version": "1.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "5.0.1"
           }
@@ -1599,6 +1614,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "2.1.1"
           }
@@ -1613,6 +1629,7 @@
           "version": "2.2.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "block-stream": "0.0.9",
             "fstream": "1.0.11",
@@ -1668,7 +1685,8 @@
         "util-deprecate": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "uuid": {
           "version": "3.0.1",
@@ -1679,8 +1697,6 @@
         "verror": {
           "version": "1.3.6",
           "bundled": true,
-          "dev": true,
-          "optional": true,
           "requires": {
             "extsprintf": "1.0.2"
           }
@@ -1697,7 +1713,8 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -1843,6 +1860,28 @@
         "assert-plus": "0.2.0",
         "jsprim": "1.4.1",
         "sshpk": "1.13.1"
+      },
+      "dependencies": {
+        "jsprim": {
+          "version": "1.4.1",
+          "resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.1.tgz",
+          "integrity": "sha512-4Dj8Rf+fQ+/Pn7C5qeEX02op1WfOss3PKTE9Nsop3Dx+6UPxlm1dr/og7o2cRa5hNN07CACr4NFzRLtj/rjWog==",
+          "dev": true,
+          "requires": {
+            "assert-plus": "1.0.0",
+            "extsprintf": "1.3.0",
+            "json-schema": "0.2.3",
+            "verror": "1.10.0"
+          },
+          "dependencies": {
+            "assert-plus": {
+              "version": "1.0.0",
+              "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+              "integrity": "sha512-NfJ4UzBCcQGLDlQq7nHxH+tv3kyZ0hHQqF5BO6J7tNJeP5do1llPr8dZ8zHonfhAu0PHAdMkSo+8o0wxg9lZWw==",
+              "dev": true
+            }
+          }
+        }
       }
     },
     "immutable": {
@@ -2059,22 +2098,41 @@
       "dev": true
     },
     "jsprim": {
-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.1.tgz",
-      "integrity": "sha1-MT5mvB5cwG5Di8G3SZwuXFastqI=",
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.0.tgz",
+      "integrity": "sha512-OyKQuabgqUi2RUPauBrfZNoCb0KNoulf1DqQ07rUW2vzauzXAq/uUe7oDstV/2RavaxGn7NfcI/F2hrBk38Fbg==",
       "dev": true,
+      "optional": true,
       "requires": {
         "assert-plus": "1.0.0",
-        "extsprintf": "1.3.0",
+        "extsprintf": "1.0.2",
         "json-schema": "0.2.3",
-        "verror": "1.10.0"
+        "verror": "1.3.6"
       },
       "dependencies": {
         "assert-plus": {
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
-          "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-          "dev": true
+          "integrity": "sha512-NfJ4UzBCcQGLDlQq7nHxH+tv3kyZ0hHQqF5BO6J7tNJeP5do1llPr8dZ8zHonfhAu0PHAdMkSo+8o0wxg9lZWw==",
+          "dev": true,
+          "optional": true
+        },
+        "extsprintf": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.0.2.tgz",
+          "integrity": "sha512-g21Br4ELmVaKCVSUSSTXecKG+MiLcHFoby5RPPUmfZdhQTontXUOPf0QK/TvreRjgItRiyO928zxR4TCrnuwmA==",
+          "dev": true,
+          "optional": true
+        },
+        "verror": {
+          "version": "1.3.6",
+          "resolved": "https://registry.npmjs.org/verror/-/verror-1.3.6.tgz",
+          "integrity": "sha512-i8GFYwImt5D5B8CPpi2jrDTy/faq4OEW+NkOTLSKcIdPfdYJvWv3VZddDKl0ByvBe6cJ2s5Mm2XDtv5c2pj/Eg==",
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "extsprintf": "1.0.2"
+          }
         }
       }
     },