diff --git a/package-lock.json b/package-lock.json
index e68045c..3befd10 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1369,7 +1369,8 @@
             "version": "1.0.0",
             "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
             "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-            "dev": true
+            "dev": true,
+            "optional": true
         },
         "assign-symbols": {
             "version": "1.0.0",
@@ -2096,6 +2097,7 @@
             "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
             "integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==",
             "dev": true,
+            "optional": true,
             "requires": {
                 "delayed-stream": "~1.0.0"
             }
@@ -2566,7 +2568,8 @@
             "version": "1.0.0",
             "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
             "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
-            "dev": true
+            "dev": true,
+            "optional": true
         },
         "depd": {
             "version": "1.1.2",
@@ -3235,7 +3238,8 @@
             "version": "1.3.0",
             "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
             "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=",
-            "dev": true
+            "dev": true,
+            "optional": true
         },
         "fast-deep-equal": {
             "version": "2.0.1",
@@ -3541,7 +3545,8 @@
                 "ansi-regex": {
                     "version": "2.1.1",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "aproba": {
                     "version": "1.2.0",
@@ -3562,12 +3567,14 @@
                 "balanced-match": {
                     "version": "1.0.0",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "brace-expansion": {
                     "version": "1.1.11",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "balanced-match": "^1.0.0",
                         "concat-map": "0.0.1"
@@ -3582,17 +3589,20 @@
                 "code-point-at": {
                     "version": "1.1.0",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "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",
@@ -3709,7 +3719,8 @@
                 "inherits": {
                     "version": "2.0.3",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "ini": {
                     "version": "1.3.5",
@@ -3721,6 +3732,7 @@
                     "version": "1.0.0",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "number-is-nan": "^1.0.0"
                     }
@@ -3735,6 +3747,7 @@
                     "version": "3.0.4",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "brace-expansion": "^1.1.7"
                     }
@@ -3742,12 +3755,14 @@
                 "minimist": {
                     "version": "0.0.8",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "minipass": {
                     "version": "2.3.5",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "safe-buffer": "^5.1.2",
                         "yallist": "^3.0.0"
@@ -3766,6 +3781,7 @@
                     "version": "0.5.1",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "minimist": "0.0.8"
                     }
@@ -3846,7 +3862,8 @@
                 "number-is-nan": {
                     "version": "1.0.1",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "object-assign": {
                     "version": "4.1.1",
@@ -3858,6 +3875,7 @@
                     "version": "1.4.0",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "wrappy": "1"
                     }
@@ -3943,7 +3961,8 @@
                 "safe-buffer": {
                     "version": "5.1.2",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "safer-buffer": {
                     "version": "2.1.2",
@@ -3979,6 +3998,7 @@
                     "version": "1.0.2",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "code-point-at": "^1.0.0",
                         "is-fullwidth-code-point": "^1.0.0",
@@ -3998,6 +4018,7 @@
                     "version": "3.0.1",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "ansi-regex": "^2.0.0"
                     }
@@ -4041,12 +4062,14 @@
                 "wrappy": {
                     "version": "1.0.2",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "yallist": {
                     "version": "3.0.3",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 }
             }
         },
@@ -4903,7 +4926,8 @@
             "version": "0.1.1",
             "resolved": "https://registry.npmjs.org/jsbn/-/jsbn-0.1.1.tgz",
             "integrity": "sha1-peZUwuWi3rXyAdls77yoDA7y9RM=",
-            "dev": true
+            "dev": true,
+            "optional": true
         },
         "jsdoc": {
             "version": "3.6.3",
@@ -7857,7 +7881,8 @@
             "version": "0.14.5",
             "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
             "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
-            "dev": true
+            "dev": true,
+            "optional": true
         },
         "type-check": {
             "version": "0.3.2",
@@ -8673,9 +8698,9 @@
             }
         },
         "ws": {
-            "version": "6.2.1",
-            "resolved": "https://registry.npmjs.org/ws/-/ws-6.2.1.tgz",
-            "integrity": "sha512-GIyAXC2cB7LjvpgMt9EKS2ldqr0MTrORaleiOno6TweZ6r3TKtoFQWay/2PceJ3RuBasOHzXNn5Lrw1X0bEjqA==",
+            "version": "6.2.2",
+            "resolved": "https://registry.npmjs.org/ws/-/ws-6.2.2.tgz",
+            "integrity": "sha512-zmhltoSR8u1cnDsD43TX59mzoMZsLKqUweyYBAIvTngR3shc0W6aOZylZmq/7hqyVxPdi+5Ud2QInblgyE72fw==",
             "dev": true,
             "requires": {
                 "async-limiter": "~1.0.0"