diff --git a/package-lock.json b/package-lock.json
index c224393..3368fb8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -150,6 +150,7 @@
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       "integrity": "sha1-1t4Q1a9hMtW9aSQn1G/FOFOQlMc=",
       "dev": true,
+      "optional": true,
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         "semver": "5.0.3"
@@ -159,7 +160,8 @@
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           "resolved": "https://registry.npmjs.org/semver/-/semver-5.0.3.tgz",
           "integrity": "sha1-d0Zt5YnNXTyV8TiqeLxWmjy10no=",
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -462,7 +464,8 @@
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       "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -1125,7 +1128,8 @@
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       "integrity": "sha1-JrOIXRD6E9t/wBquOquHAZngEkw=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -1832,6 +1836,7 @@
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       "integrity": "sha1-cj599ugBrFYTETp+RFqbactjKBg=",
       "dev": true,
+      "optional": true,
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@@ -2210,7 +2215,7 @@
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-      "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=",
+      "integrity": "sha512-hjf+xovcEn31w/EUYdTXQh/8smFL/dzYjohQGEIgjyNavaJfBY2p5F527Bo1VPATxv0VYTUC2bOcXvqFwk78Og==",
       "dev": true
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@@ -2291,7 +2296,8 @@
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       "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
       "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -3193,7 +3199,8 @@
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       "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
       "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -3440,7 +3447,8 @@
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           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3491,7 +3499,8 @@
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           "version": "0.4.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3506,6 +3515,7 @@
           "version": "0.0.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -3514,6 +3524,7 @@
           "version": "2.10.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "hoek": "2.16.3"
           }
@@ -3522,6 +3533,7 @@
           "version": "1.1.7",
           "bundled": true,
           "dev": true,
+          "optional": true,
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             "concat-map": "0.0.1"
@@ -3530,7 +3542,8 @@
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           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "0.12.0",
@@ -3547,12 +3560,14 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "combined-stream": {
           "version": "1.0.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -3560,22 +3575,26 @@
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           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "cryptiles": {
           "version": "2.0.5",
           "bundled": true,
           "dev": true,
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           "requires": {
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           }
@@ -3615,7 +3634,8 @@
         "delayed-stream": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3647,7 +3667,8 @@
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           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
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@@ -3669,12 +3690,14 @@
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           "version": "1.0.0",
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+          "optional": true
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         "fstream": {
           "version": "1.0.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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             "inherits": "2.0.3",
@@ -3730,6 +3753,7 @@
           "version": "7.1.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "fs.realpath": "1.0.0",
             "inflight": "1.0.6",
@@ -3742,7 +3766,8 @@
         "graceful-fs": {
           "version": "4.1.11",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "har-schema": {
           "version": "1.0.5",
@@ -3770,6 +3795,7 @@
           "version": "3.1.3",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "boom": "2.10.1",
             "cryptiles": "2.0.5",
@@ -3780,7 +3806,8 @@
         "hoek": {
           "version": "2.16.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "http-signature": {
           "version": "1.1.1",
@@ -3797,6 +3824,7 @@
           "version": "1.0.6",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "once": "1.4.0",
             "wrappy": "1.0.2"
@@ -3805,7 +3833,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.4",
@@ -3817,6 +3846,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "1.0.1"
           }
@@ -3830,7 +3860,8 @@
         "isarray": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "0.1.2",
@@ -3903,12 +3934,14 @@
         "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"
           }
@@ -3917,6 +3950,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "1.1.7"
           }
@@ -3924,12 +3958,14 @@
         "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": {
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           }
@@ -3984,7 +4020,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "oauth-sign": {
           "version": "0.8.2",
@@ -4002,6 +4039,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -4031,7 +4069,8 @@
         "path-is-absolute": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "performance-now": {
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@@ -4042,7 +4081,8 @@
         "process-nextick-args": {
           "version": "1.0.7",
           "bundled": true,
-          "dev": true
+          "dev": true,
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           "version": "1.4.1",
@@ -4080,6 +4120,7 @@
           "version": "2.2.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "buffer-shims": "1.0.0",
             "core-util-is": "1.0.2",
@@ -4124,6 +4165,7 @@
           "version": "2.6.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "glob": "7.1.2"
           }
@@ -4131,7 +4173,8 @@
         "safe-buffer": {
           "version": "5.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "semver": {
           "version": "5.3.0",
@@ -4155,6 +4198,7 @@
           "version": "1.0.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "hoek": "2.16.3"
           }
@@ -4188,6 +4232,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "1.1.0",
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@@ -4198,6 +4243,7 @@
           "version": "1.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "5.0.1"
           }
@@ -4212,6 +4258,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "2.1.1"
           }
@@ -4226,6 +4273,7 @@
           "version": "2.2.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "block-stream": "0.0.9",
             "fstream": "1.0.11",
@@ -4281,7 +4329,8 @@
         "util-deprecate": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "uuid": {
           "version": "3.0.1",
@@ -4310,7 +4359,8 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
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@@ -4952,7 +5002,8 @@
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-      "dev": true
+      "dev": true,
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@@ -5056,6 +5107,7 @@
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       "integrity": "sha1-zBzjjkU7+YSg93AtLdWcc9CBKEo=",
       "dev": true,
+      "optional": true,
       "requires": {
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@@ -5079,6 +5131,7 @@
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       "integrity": "sha1-rQFScUOi6Hc8+uapb1hla7UqNLI=",
       "dev": true,
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         "underscore": "1.7.0"
@@ -5088,7 +5141,8 @@
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           "integrity": "sha1-a7rwh3UA02vjTsqlhODbn+8DUgk=",
-          "dev": true
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@@ -5096,7 +5150,8 @@
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       "integrity": "sha1-QzX/2CzZaWaKOUZckprGHWOTYn8=",
-      "dev": true
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@@ -5109,6 +5164,7 @@
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       "integrity": "sha1-NffabEjOTdv6JkiRrFk+5f+GceY=",
       "dev": true,
+      "optional": true,
       "requires": {
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@@ -5860,7 +5916,8 @@
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       "integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -6279,13 +6336,15 @@
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       "integrity": "sha1-YjUag5VjrF/1vSbxL2Dpgwu3UeY=",
-      "dev": true
+      "dev": true,
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     "libmime": {
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       "resolved": "https://registry.npmjs.org/libmime/-/libmime-3.0.0.tgz",
       "integrity": "sha1-UaGp50SOy9Ms2lRCFnW7IbwJPaY=",
       "dev": true,
+      "optional": true,
       "requires": {
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@@ -6296,7 +6355,8 @@
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           "integrity": "sha1-/iZaIYrGpXz+hUkn6dBMGYJe3es=",
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -6304,7 +6364,8 @@
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       "integrity": "sha1-9ebgatdLeU+1tbZpiL9yjvHe2+g=",
-      "dev": true
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+      "optional": true
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@@ -6445,6 +6506,7 @@
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           "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -6522,7 +6584,8 @@
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           "integrity": "sha1-ILt0A9POo5jpHcRxCo/xuCdKJe0=",
-          "dev": true
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+          "optional": true
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@@ -7313,13 +7376,15 @@
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       "resolved": "https://registry.npmjs.org/nodemailer-fetch/-/nodemailer-fetch-1.6.0.tgz",
       "integrity": "sha1-ecSQihwPXzdbc/6IjamCj23JY6Q=",
-      "dev": true
+      "dev": true,
+      "optional": true
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     "nodemailer-shared": {
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       "resolved": "https://registry.npmjs.org/nodemailer-shared/-/nodemailer-shared-1.1.0.tgz",
       "integrity": "sha1-z1mU4v0mjQD1zw+nZ6CBae2wfsA=",
       "dev": true,
+      "optional": true,
       "requires": {
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@@ -7352,7 +7417,8 @@
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       "resolved": "https://registry.npmjs.org/nodemailer-wellknown/-/nodemailer-wellknown-0.1.10.tgz",
       "integrity": "sha1-WG24EB2zDLRDjrVGc3pBqtDPE9U=",
-      "dev": true
+      "dev": true,
+      "optional": true
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     "nopt": {
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@@ -11378,7 +11444,8 @@
                     "console-control-strings": {
                       "version": "1.1.0",
                       "bundled": true,
-                      "dev": true
+                      "dev": true,
+                      "optional": true
                     },
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                       "version": "2.6.0",
@@ -11419,6 +11486,7 @@
                           "version": "1.0.2",
                           "bundled": true,
                           "dev": true,
+                          "optional": true,
                           "requires": {
                             "code-point-at": "1.0.0",
                             "is-fullwidth-code-point": "1.0.0",
@@ -11429,6 +11497,7 @@
                               "version": "1.0.0",
                               "bundled": true,
                               "dev": true,
+                              "optional": true,
                               "requires": {
                                 "number-is-nan": "1.0.0"
                               },
@@ -11436,7 +11505,8 @@
                                 "number-is-nan": {
                                   "version": "1.0.0",
                                   "bundled": true,
-                                  "dev": true
+                                  "dev": true,
+                                  "optional": true
                                 }
                               }
                             },
@@ -11444,6 +11514,7 @@
                               "version": "1.0.0",
                               "bundled": true,
                               "dev": true,
+                              "optional": true,
                               "requires": {
                                 "number-is-nan": "1.0.0"
                               },
@@ -11451,7 +11522,8 @@
                                 "number-is-nan": {
                                   "version": "1.0.0",
                                   "bundled": true,
-                                  "dev": true
+                                  "dev": true,
+                                  "optional": true
                                 }
                               }
                             }
@@ -16149,13 +16221,15 @@
       "version": "1.1.15",
       "resolved": "https://registry.npmjs.org/smart-buffer/-/smart-buffer-1.1.15.tgz",
       "integrity": "sha1-fxFLW2X6s+KjWqd1uxLw0cZJvxY=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "smtp-connection": {
       "version": "2.12.0",
       "resolved": "https://registry.npmjs.org/smtp-connection/-/smtp-connection-2.12.0.tgz",
       "integrity": "sha1-1275EnyyPCJZ7bHoNJwujV4tdME=",
       "dev": true,
+      "optional": true,
       "requires": {
         "httpntlm": "1.6.1",
         "nodemailer-shared": "1.1.0"
@@ -16465,7 +16539,7 @@
         },
         "onetime": {
           "version": "1.1.0",
-          "resolved": "http://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
           "integrity": "sha1-ofeDj4MUxRbwXs78vEzP4EtO14k=",
           "dev": true
         },
@@ -16791,6 +16865,7 @@
       "resolved": "https://registry.npmjs.org/socks/-/socks-1.1.10.tgz",
       "integrity": "sha1-W4t/x8jzQcU+0FbpKbe/Tei6e1o=",
       "dev": true,
+      "optional": true,
       "requires": {
         "ip": "1.1.5",
         "smart-buffer": "1.1.15"
@@ -16800,7 +16875,8 @@
           "version": "1.1.5",
           "resolved": "https://registry.npmjs.org/ip/-/ip-1.1.5.tgz",
           "integrity": "sha1-vd7XARQpCCjAoDnnLvJfWq7ENUo=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -16809,6 +16885,7 @@
       "resolved": "https://registry.npmjs.org/socks-proxy-agent/-/socks-proxy-agent-2.1.1.tgz",
       "integrity": "sha512-sFtmYqdUK5dAMh85H0LEVFUCO7OhJJe1/z2x/Z6mxp3s7/QPf1RkZmpZy+BpuU0bEjcV9npqKjq9Y3kwFUjnxw==",
       "dev": true,
+      "optional": true,
       "requires": {
         "agent-base": "2.1.1",
         "extend": "3.0.1",