diff --git a/package-lock.json b/package-lock.json
index f69965a..22f0733 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -921,7 +921,8 @@
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       "version": "0.3.1",
       "resolved": "https://registry.npmjs.org/@google-cloud/promisify/-/promisify-0.3.1.tgz",
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+      "integrity": "sha512-QzB0/IMvB0eFxFK7Eqh+bfC8NLv3E9ScjWQrPOk6GgfNroxcVITdTlT8NRsRrcp5+QQJVPLkRqKG0PUdaWXmHw==",
+      "optional": true
     },
     "@google-cloud/storage": {
       "version": "2.4.2",
@@ -981,27 +982,32 @@
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       "resolved": "https://registry.npmjs.org/@protobufjs/aspromise/-/aspromise-1.1.2.tgz",
-      "integrity": "sha1-m4sMxmPWaafY9vXQiToU00jzD78="
+      "integrity": "sha1-m4sMxmPWaafY9vXQiToU00jzD78=",
+      "optional": true
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       "resolved": "https://registry.npmjs.org/@protobufjs/base64/-/base64-1.1.2.tgz",
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+      "integrity": "sha512-AZkcAA5vnN/v4PDqKyMR5lx7hZttPDgClv83E//FMNhR2TMcLUhfRUBHCmSl0oi9zMgDDqRUJkSxO3wm85+XLg==",
+      "optional": true
     },
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       "resolved": "https://registry.npmjs.org/@protobufjs/codegen/-/codegen-2.0.4.tgz",
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+      "integrity": "sha512-YyFaikqM5sH0ziFZCN3xDC7zeGaB/d0IUb9CATugHWbd1FRFwWwt4ld4OYMPWu5a3Xe01mGAULCdqhMlPl29Jg==",
+      "optional": true
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     "@protobufjs/eventemitter": {
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       "resolved": "https://registry.npmjs.org/@protobufjs/eventemitter/-/eventemitter-1.1.0.tgz",
-      "integrity": "sha1-NVy8mLr61ZePntCV85diHx0Ga3A="
+      "integrity": "sha1-NVy8mLr61ZePntCV85diHx0Ga3A=",
+      "optional": true
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     "@protobufjs/fetch": {
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       "resolved": "https://registry.npmjs.org/@protobufjs/fetch/-/fetch-1.1.0.tgz",
       "integrity": "sha1-upn7WYYUr2VwDBYZ/wbUVLDYTEU=",
+      "optional": true,
       "requires": {
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         "@protobufjs/inquire": "^1.1.0"
@@ -1010,27 +1016,32 @@
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       "resolved": "https://registry.npmjs.org/@protobufjs/float/-/float-1.0.2.tgz",
-      "integrity": "sha1-Xp4avctz/Ap8uLKR33jIy9l7h9E="
+      "integrity": "sha1-Xp4avctz/Ap8uLKR33jIy9l7h9E=",
+      "optional": true
     },
     "@protobufjs/inquire": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/@protobufjs/inquire/-/inquire-1.1.0.tgz",
-      "integrity": "sha1-/yAOPnzyQp4tyvwRQIKOjMY48Ik="
+      "integrity": "sha1-/yAOPnzyQp4tyvwRQIKOjMY48Ik=",
+      "optional": true
     },
     "@protobufjs/path": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/@protobufjs/path/-/path-1.1.2.tgz",
-      "integrity": "sha1-bMKyDFya1q0NzP0hynZz2Nf79o0="
+      "integrity": "sha1-bMKyDFya1q0NzP0hynZz2Nf79o0=",
+      "optional": true
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     "@protobufjs/pool": {
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       "resolved": "https://registry.npmjs.org/@protobufjs/pool/-/pool-1.1.0.tgz",
-      "integrity": "sha1-Cf0V8tbTq/qbZbw2ZQbWrXhG/1Q="
+      "integrity": "sha1-Cf0V8tbTq/qbZbw2ZQbWrXhG/1Q=",
+      "optional": true
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     "@protobufjs/utf8": {
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       "resolved": "https://registry.npmjs.org/@protobufjs/utf8/-/utf8-1.1.0.tgz",
-      "integrity": "sha1-p3c2C1s5oaLlEG+OhY8v0tBgxXA="
+      "integrity": "sha1-p3c2C1s5oaLlEG+OhY8v0tBgxXA=",
+      "optional": true
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     "@types/caseless": {
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@@ -1059,7 +1070,8 @@
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+      "integrity": "sha512-1w52Nyx4Gq47uuu0EVcsHBxZFJgurQ+rTKS3qMHxR1GY2T8c2AJYd6vZoZ9q1rupaDjU0yT+Jc2XTyXkjeMA+Q==",
+      "optional": true
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     "@types/node": {
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@@ -1094,6 +1106,7 @@
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       "resolved": "https://registry.npmjs.org/abort-controller/-/abort-controller-2.0.2.tgz",
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+      "optional": true,
       "requires": {
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       }
@@ -1138,6 +1151,7 @@
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       "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-4.2.1.tgz",
       "integrity": "sha512-JVwXMr9nHYTUXsBFKUqhJwvlcYU/blreOEUkhNR2eXZIvwd+c+o5V4MgDPKWnMS/56awN3TRzIP+KoPn+roQtg==",
+      "optional": true,
       "requires": {
         "es6-promisify": "^5.0.0"
       }
@@ -1320,7 +1334,8 @@
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       "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
-      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
+      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
+      "optional": true
     },
     "assign-symbols": {
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@@ -1447,7 +1462,8 @@
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       "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.0.tgz",
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+      "integrity": "sha512-ccav/yGvoa80BQDljCxsmmQ3Xvx60/UpBIij5QN21W3wBi/hhIC9OoO+KLpu9IJTS9j4DRVJ3aDDF9cMSoa2lw==",
+      "optional": true
     },
     "basic-auth": {
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@@ -1469,7 +1485,8 @@
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       "resolved": "https://registry.npmjs.org/bignumber.js/-/bignumber.js-7.2.1.tgz",
-      "integrity": "sha512-S4XzBk5sMB+Rcb/LNcpzXr57VRTxgAvaAEDAl1AwRx27j00hT84O6OkteE7u8UB3NuaaygCRrEpqox4uDOrbdQ=="
+      "integrity": "sha512-S4XzBk5sMB+Rcb/LNcpzXr57VRTxgAvaAEDAl1AwRx27j00hT84O6OkteE7u8UB3NuaaygCRrEpqox4uDOrbdQ==",
+      "optional": true
     },
     "binary-extensions": {
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@@ -2002,6 +2019,7 @@
       "version": "1.0.7",
       "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.7.tgz",
       "integrity": "sha512-brWl9y6vOB1xYPZcpZde3N9zDByXTosAeMDo4p1wzo6UMOX4vumB+TP1RZ76sfE6Md68Q0NJSrE/gbezd4Ul+w==",
+      "optional": true,
       "requires": {
         "delayed-stream": "~1.0.0"
       }
@@ -2322,7 +2340,8 @@
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       "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
-      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk="
+      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
+      "optional": true
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@@ -2413,6 +2432,7 @@
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       "resolved": "https://registry.npmjs.org/duplexify/-/duplexify-3.7.1.tgz",
       "integrity": "sha512-07z8uv2wMyS51kKhD1KsdXJg5WQ6t93RneqRxUHnskXVtlYYkLqM0gqStQZ3pj073g687jPCHrqNfCzawLYh5g==",
+      "optional": true,
       "requires": {
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         "inherits": "^2.0.1",
@@ -2532,12 +2552,14 @@
     "es6-promise": {
       "version": "4.2.5",
       "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-4.2.5.tgz",
-      "integrity": "sha512-n6wvpdE43VFtJq+lUDYDBFUwV8TZbuGXLV4D6wKafg13ldznKsyEvatubnmUe31zcvelSzOHF+XbaT+Bl9ObDg=="
+      "integrity": "sha512-n6wvpdE43VFtJq+lUDYDBFUwV8TZbuGXLV4D6wKafg13ldznKsyEvatubnmUe31zcvelSzOHF+XbaT+Bl9ObDg==",
+      "optional": true
     },
     "es6-promisify": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/es6-promisify/-/es6-promisify-5.0.0.tgz",
       "integrity": "sha1-UQnWLz5W6pZ8S2NQWu8IKRyKUgM=",
+      "optional": true,
       "requires": {
         "es6-promise": "^4.0.3"
       }
@@ -2827,7 +2849,8 @@
     "event-target-shim": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/event-target-shim/-/event-target-shim-5.0.0.tgz",
-      "integrity": "sha512-vu4tlY5xqMEGj/rzuDHxfvm9Kk2562O5h58i8xwnkMkv/yqmBqBcDJt/vGBrOBbCKuVc5eV3ghYxAX9YUhyi0w=="
+      "integrity": "sha512-vu4tlY5xqMEGj/rzuDHxfvm9Kk2562O5h58i8xwnkMkv/yqmBqBcDJt/vGBrOBbCKuVc5eV3ghYxAX9YUhyi0w==",
+      "optional": true
     },
     "execa": {
       "version": "0.7.0",
@@ -2946,7 +2969,8 @@
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       "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
-      "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g=="
+      "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==",
+      "optional": true
     },
     "extend-shallow": {
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@@ -3065,7 +3089,8 @@
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       "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
-      "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU="
+      "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=",
+      "optional": true
     },
     "fast-deep-equal": {
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@@ -3097,7 +3122,8 @@
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       "resolved": "https://registry.npmjs.org/fast-text-encoding/-/fast-text-encoding-1.0.0.tgz",
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+      "integrity": "sha512-R9bHCvweUxxwkDwhjav5vxpFvdPGlVngtqmx4pIZfSUhM/Q4NiIUHB456BAf+Q1Nwu3HEZYONtu+Rya+af4jiQ==",
+      "optional": true
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@@ -3302,7 +3328,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
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           "version": "1.2.0",
@@ -3323,12 +3350,14 @@
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           "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": {
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@@ -3343,17 +3372,20 @@
         "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
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         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
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@@ -3470,7 +3502,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
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           "version": "1.3.5",
@@ -3482,6 +3515,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -3496,6 +3530,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -3503,12 +3538,14 @@
         "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": {
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             "yallist": "^3.0.0"
@@ -3527,6 +3564,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -3607,7 +3645,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -3619,6 +3658,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -3704,7 +3744,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -3740,6 +3781,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
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@@ -3759,6 +3801,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -3802,12 +3845,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
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@@ -3826,6 +3871,7 @@
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+      "optional": true,
       "requires": {
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@@ -3837,6 +3883,7 @@
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+      "optional": true,
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@@ -3958,6 +4005,7 @@
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+      "optional": true,
       "requires": {
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@@ -3974,6 +4022,7 @@
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+          "optional": true,
           "requires": {
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@@ -3981,7 +4030,8 @@
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           "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
-          "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A=="
+          "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==",
+          "optional": true
         }
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@@ -4010,6 +4060,7 @@
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+      "optional": true,
       "requires": {
         "node-forge": "^0.7.5",
         "pify": "^4.0.0"
@@ -4018,12 +4069,14 @@
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-          "integrity": "sha512-sol30LUpz1jQFBjOKwbjxijiE3b6pjd74YwfD0fJOKPjF+fONKb2Yg8rYgS6+bK6VDl+/wfr4IYpC7jDzLUIfw=="
+          "integrity": "sha512-sol30LUpz1jQFBjOKwbjxijiE3b6pjd74YwfD0fJOKPjF+fONKb2Yg8rYgS6+bK6VDl+/wfr4IYpC7jDzLUIfw==",
+          "optional": true
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@@ -4086,7 +4139,8 @@
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@@ -4104,11 +4158,13 @@
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@@ -4121,15 +4177,18 @@
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@@ -4169,7 +4228,8 @@
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@@ -4189,6 +4249,7 @@
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@@ -4222,6 +4283,7 @@
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@@ -4229,7 +4291,8 @@
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@@ -4239,6 +4302,7 @@
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           }
@@ -4251,6 +4315,7 @@
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           "bundled": true,
+          "optional": true,
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@@ -4263,6 +4328,7 @@
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@@ -4279,13 +4345,15 @@
         "mkdirp": {
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           "bundled": true,
+          "optional": true,
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             "minimist": {
               "version": "0.0.8",
-              "bundled": true
+              "bundled": true,
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@@ -4357,7 +4425,8 @@
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@@ -4367,6 +4436,7 @@
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           "bundled": true,
+          "optional": true,
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@@ -4392,7 +4462,8 @@
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@@ -4446,7 +4517,8 @@
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@@ -4476,6 +4548,7 @@
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@@ -4493,6 +4566,7 @@
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@@ -4531,11 +4605,13 @@
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+          "bundled": true,
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@@ -4554,19 +4631,21 @@
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+      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.5.3.tgz",
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@@ -4574,12 +4653,6 @@
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@@ -4595,14 +4668,10 @@
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-          "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.6.0.tgz",
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-          "optional": true,
-          "requires": {
-            "commander": "~2.20.0",
-            "source-map": "~0.6.1"
-          }
+          "version": "3.10.3",
+          "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.10.3.tgz",
+          "integrity": "sha512-Lh00i69Uf6G74mvYpHCI9KVVXLcHW/xu79YTvH7Mkc9zyKUeSPz0owW0dguj0Scavns3ZOh3wY63J0Zb97Za2g==",
+          "optional": true
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@@ -4766,6 +4835,7 @@
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+      "optional": true,
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@@ -4775,6 +4845,7 @@
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+          "optional": true,
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@@ -4782,7 +4853,8 @@
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+          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
+          "optional": true
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@@ -5340,7 +5412,8 @@
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       "resolved": "https://registry.npmjs.org/jsbn/-/jsbn-0.1.1.tgz",
-      "integrity": "sha1-peZUwuWi3rXyAdls77yoDA7y9RM="
+      "integrity": "sha1-peZUwuWi3rXyAdls77yoDA7y9RM=",
+      "optional": true
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@@ -5352,6 +5425,7 @@
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       "integrity": "sha1-DM2RLEuCcNBfBW+9E4FLU9OCWx4=",
+      "optional": true,
       "requires": {
         "bignumber.js": "^7.0.0"
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@@ -5566,7 +5640,8 @@
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       "resolved": "https://registry.npmjs.org/lodash.camelcase/-/lodash.camelcase-4.3.0.tgz",
-      "integrity": "sha1-soqmKIorn8ZRA1x3EfZathkDMaY="
+      "integrity": "sha1-soqmKIorn8ZRA1x3EfZathkDMaY=",
+      "optional": true
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     "lodash.clone": {
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@@ -5643,7 +5718,8 @@
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       "resolved": "https://registry.npmjs.org/long/-/long-4.0.0.tgz",
-      "integrity": "sha512-XsP+KhQif4bjX1kbuSiySJFNAehNxgLb6hPRGJ9QsUr8ajHkuXGdrHmFUTUUXhDwVX2R5bY4JNZEwbUiMhV+MA=="
+      "integrity": "sha512-XsP+KhQif4bjX1kbuSiySJFNAehNxgLb6hPRGJ9QsUr8ajHkuXGdrHmFUTUUXhDwVX2R5bY4JNZEwbUiMhV+MA==",
+      "optional": true
     },
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@@ -6066,9 +6142,9 @@
       "integrity": "sha1-KzJxhOiZIQEXeyhWP7XnECrNDKk="
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-      "version": "2.6.1",
-      "resolved": "https://registry.npmjs.org/neo-async/-/neo-async-2.6.1.tgz",
-      "integrity": "sha512-iyam8fBuCUpWeKPGpaNMetEocMt364qkCsfL9JuhjXX6dRnguRVOfk2GZaDpPjcOKiiXCPINZC1GczQ7iTq3Zw=="
+      "version": "2.6.2",
+      "resolved": "https://registry.npmjs.org/neo-async/-/neo-async-2.6.2.tgz",
+      "integrity": "sha512-Yd3UES5mWCSqR+qNT93S3UoYUkqAZ9lLg8a7g9rimsWmYGK8cVToA4/sF3RrshdyV3sAGMXVUmpMYOw+dLpOuw=="
     },
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@@ -6079,7 +6155,8 @@
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       "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.3.0.tgz",
-      "integrity": "sha512-MOd8pV3fxENbryESLgVIeaGKrdl+uaYhCSSVkjeOb/31/njTpcis5aWfdqgNlHIrKOLRbMnfPINPOML2CIFeXA=="
+      "integrity": "sha512-MOd8pV3fxENbryESLgVIeaGKrdl+uaYhCSSVkjeOb/31/njTpcis5aWfdqgNlHIrKOLRbMnfPINPOML2CIFeXA==",
+      "optional": true
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     "node-forge": {
       "version": "0.7.4",
@@ -6698,6 +6775,7 @@
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       "resolved": "https://registry.npmjs.org/protobufjs/-/protobufjs-6.8.8.tgz",
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+      "optional": true,
       "requires": {
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         "@protobufjs/base64": "^1.1.2",
@@ -6717,7 +6795,8 @@
         "@types/node": {
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           "resolved": "https://registry.npmjs.org/@types/node/-/node-10.12.26.tgz",
-          "integrity": "sha512-nMRqS+mL1TOnIJrL6LKJcNZPB8V3eTfRo9FQA2b5gDvrHurC8XbSA86KNe0dShlEL7ReWJv/OU9NL7Z0dnqWTg=="
+          "integrity": "sha512-nMRqS+mL1TOnIJrL6LKJcNZPB8V3eTfRo9FQA2b5gDvrHurC8XbSA86KNe0dShlEL7ReWJv/OU9NL7Z0dnqWTg==",
+          "optional": true
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@@ -6752,6 +6831,7 @@
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+      "optional": true,
       "requires": {
         "end-of-stream": "^1.1.0",
         "once": "^1.3.1"
@@ -6761,6 +6841,7 @@
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       "resolved": "https://registry.npmjs.org/pumpify/-/pumpify-1.5.1.tgz",
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+      "optional": true,
       "requires": {
         "duplexify": "^3.6.0",
         "inherits": "^2.0.3",
@@ -7732,6 +7813,7 @@
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       "resolved": "https://registry.npmjs.org/stream-events/-/stream-events-1.0.5.tgz",
       "integrity": "sha512-E1GUzBSgvct8Jsb3v2X15pjzN1tYebtbLaMg+eBOUOAxgbLoSbT2NS91ckc5lJD1KfLjId+jXJRgo0qnV5Nerg==",
+      "optional": true,
       "requires": {
         "stubs": "^3.0.0"
       }
@@ -7739,7 +7821,8 @@
     "stream-shift": {
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       "resolved": "https://registry.npmjs.org/stream-shift/-/stream-shift-1.0.0.tgz",
-      "integrity": "sha1-1cdSgl5TZ+eG944Y5EXqIjoVWVI="
+      "integrity": "sha1-1cdSgl5TZ+eG944Y5EXqIjoVWVI=",
+      "optional": true
     },
     "streamsearch": {
       "version": "0.1.2",
@@ -7794,7 +7877,8 @@
     "stubs": {
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       "resolved": "https://registry.npmjs.org/stubs/-/stubs-3.0.0.tgz",
-      "integrity": "sha1-6NK6H6nJBXAwPAMLaQD31fiavls="
+      "integrity": "sha1-6NK6H6nJBXAwPAMLaQD31fiavls=",
+      "optional": true
     },
     "supports-color": {
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@@ -8046,7 +8130,8 @@
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       "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
-      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q="
+      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
+      "optional": true
     },
     "type-check": {
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@@ -8295,7 +8380,8 @@
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       "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
-      "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA=="
+      "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==",
+      "optional": true
     },
     "v8flags": {
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@@ -8340,7 +8426,8 @@
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       "resolved": "https://registry.npmjs.org/walkdir/-/walkdir-0.0.12.tgz",
-      "integrity": "sha512-HFhaD4mMWPzFSqhpyDG48KDdrjfn409YQuVW7ckZYhW4sE87mYtWifdB/+73RA7+p4s4K18n5Jfx1kHthE1gBw=="
+      "integrity": "sha512-HFhaD4mMWPzFSqhpyDG48KDdrjfn409YQuVW7ckZYhW4sE87mYtWifdB/+73RA7+p4s4K18n5Jfx1kHthE1gBw==",
+      "optional": true
     },
     "websocket-driver": {
       "version": "0.7.0",
diff --git a/package.json b/package.json
index 9330ee0..7c77c13 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "express": "~4.16.0",
     "express-ws": "^4.0.0",
     "firebase-admin": "^7.0.0",
-    "handlebars": "^4.1.2",
+    "handlebars": "^4.5.3",
     "http-errors": "^1.7.2",
     "jade": "^1.11.0",
     "mongodb": "^3.2.3",