diff --git a/functions/package-lock.json b/functions/package-lock.json
index 9a90e96..c977089 100644
--- a/functions/package-lock.json
+++ b/functions/package-lock.json
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       "resolved": "https://registry.npmjs.org/snapdragon/-/snapdragon-0.8.2.tgz",
       "integrity": "sha512-FtyOnWN/wCHTVXOMwvSv26d+ko5vWlIDD6zoUJ7LW8vh+ZBC8QdljveRP+crNrtBwioEUWy/4dMtbBjA4ioNlg==",
+      "optional": true,
       "requires": {
         "base": "^0.11.1",
         "debug": "^2.2.0",
@@ -3792,6 +3975,7 @@
           "version": "0.2.5",
           "resolved": "https://registry.npmjs.org/define-property/-/define-property-0.2.5.tgz",
           "integrity": "sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=",
+          "optional": true,
           "requires": {
             "is-descriptor": "^0.1.0"
           }
@@ -3800,6 +3984,7 @@
           "version": "2.0.1",
           "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
           "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
+          "optional": true,
           "requires": {
             "is-extendable": "^0.1.0"
           }
@@ -3810,6 +3995,7 @@
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/snapdragon-node/-/snapdragon-node-2.1.1.tgz",
       "integrity": "sha512-O27l4xaMYt/RSQ5TR3vpWCAB5Kb/czIcqUFOM/C4fYcLnbZUc1PkjTAMjof2pBWaSTwOUd6qUHcFGVGj7aIwnw==",
+      "optional": true,
       "requires": {
         "define-property": "^1.0.0",
         "isobject": "^3.0.0",
@@ -3820,6 +4006,7 @@
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/define-property/-/define-property-1.0.0.tgz",
           "integrity": "sha1-dp66rz9KY6rTr56NMEybvnm/sOY=",
+          "optional": true,
           "requires": {
             "is-descriptor": "^1.0.0"
           }
@@ -3828,6 +4015,7 @@
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-1.0.0.tgz",
           "integrity": "sha512-m5hnHTkcVsPfqx3AKlyttIPb7J+XykHvJP2B9bZDjlhLIoEq4XoK64Vg7boZlVWYK6LUY94dYPEE7Lh0ZkZKcQ==",
+          "optional": true,
           "requires": {
             "kind-of": "^6.0.0"
           }
@@ -3836,6 +4024,7 @@
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-1.0.0.tgz",
           "integrity": "sha512-jbRXy1FmtAoCjQkVmIVYwuuqDFUbaOeDjmed1tOGPrsMhtJA4rD9tkgA0F1qJ3gRFRXcHYVkdeaP50Q5rE/jLQ==",
+          "optional": true,
           "requires": {
             "kind-of": "^6.0.0"
           }
@@ -3844,6 +4033,7 @@
           "version": "1.0.2",
           "resolved": "https://registry.npmjs.org/is-descriptor/-/is-descriptor-1.0.2.tgz",
           "integrity": "sha512-2eis5WqQGV7peooDyLmNEPUrps9+SXX5c9pL3xEB+4e9HnGuDa7mB7kHxHw4CbqS9k1T2hOH3miL8n8WtiYVtg==",
+          "optional": true,
           "requires": {
             "is-accessor-descriptor": "^1.0.0",
             "is-data-descriptor": "^1.0.0",
@@ -3856,6 +4046,7 @@
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/snapdragon-util/-/snapdragon-util-3.0.1.tgz",
       "integrity": "sha512-mbKkMdQKsjX4BAL4bRYTj21edOf8cN7XHdYUJEe+Zn99hVEYcMvKPct1IqNe7+AZPirn8BCDOQBHQZknqmKlZQ==",
+      "optional": true,
       "requires": {
         "kind-of": "^3.2.0"
       },
@@ -3864,6 +4055,7 @@
           "version": "3.2.2",
           "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
           "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
+          "optional": true,
           "requires": {
             "is-buffer": "^1.1.5"
           }
@@ -3873,12 +4065,14 @@
     "source-map": {
       "version": "0.5.7",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
-      "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w="
+      "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
+      "optional": true
     },
     "source-map-resolve": {
       "version": "0.5.2",
       "resolved": "https://registry.npmjs.org/source-map-resolve/-/source-map-resolve-0.5.2.tgz",
       "integrity": "sha512-MjqsvNwyz1s0k81Goz/9vRBe9SZdB09Bdw+/zYyO+3CuPk6fouTaxscHkgtE8jKvf01kVfl8riHzERQ/kefaSA==",
+      "optional": true,
       "requires": {
         "atob": "^2.1.1",
         "decode-uri-component": "^0.2.0",
@@ -3890,7 +4084,8 @@
     "source-map-url": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/source-map-url/-/source-map-url-0.4.0.tgz",
-      "integrity": "sha1-PpNdfd1zYxuXZZlW1VEo6HtQhKM="
+      "integrity": "sha1-PpNdfd1zYxuXZZlW1VEo6HtQhKM=",
+      "optional": true
     },
     "split-array-stream": {
       "version": "1.0.3",
@@ -3906,6 +4101,7 @@
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/split-string/-/split-string-3.1.0.tgz",
       "integrity": "sha512-NzNVhJDYpwceVVii8/Hu6DKfD2G+NrQHlS/V/qgv763EYudVwEcMQNxd2lh+0VrUByXN/oJkl5grOhYWvQUYiw==",
+      "optional": true,
       "requires": {
         "extend-shallow": "^3.0.0"
       }
@@ -3936,6 +4132,7 @@
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/static-extend/-/static-extend-0.1.2.tgz",
       "integrity": "sha1-YICcOcv/VTNyJv1eC1IPNB8ftcY=",
+      "optional": true,
       "requires": {
         "define-property": "^0.2.5",
         "object-copy": "^0.1.0"
@@ -3945,6 +4142,7 @@
           "version": "0.2.5",
           "resolved": "https://registry.npmjs.org/define-property/-/define-property-0.2.5.tgz",
           "integrity": "sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=",
+          "optional": true,
           "requires": {
             "is-descriptor": "^0.1.0"
           }
@@ -3965,6 +4163,7 @@
       "version": "1.0.5",
       "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"
       }
@@ -3972,7 +4171,8 @@
     "stream-shift": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/stream-shift/-/stream-shift-1.0.0.tgz",
-      "integrity": "sha1-1cdSgl5TZ+eG944Y5EXqIjoVWVI="
+      "integrity": "sha1-1cdSgl5TZ+eG944Y5EXqIjoVWVI=",
+      "optional": true
     },
     "string-format-obj": {
       "version": "1.1.1",
@@ -4000,6 +4200,7 @@
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/stringifier/-/stringifier-1.4.0.tgz",
       "integrity": "sha512-cNsMOqqrcbLcHTXEVmkw9y0fwDwkdgtZwlfyolzpQDoAE1xdNGhQhxBUfiDvvZIKl1hnUEgMv66nHwtMz3OjPw==",
+      "optional": true,
       "requires": {
         "core-js": "^2.0.0",
         "traverse": "^0.6.6",
@@ -4017,7 +4218,8 @@
     "stubs": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/stubs/-/stubs-3.0.0.tgz",
-      "integrity": "sha1-6NK6H6nJBXAwPAMLaQD31fiavls="
+      "integrity": "sha1-6NK6H6nJBXAwPAMLaQD31fiavls=",
+      "optional": true
     },
     "supports-color": {
       "version": "2.0.0",
@@ -4029,6 +4231,7 @@
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
       "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
+      "optional": true,
       "requires": {
         "readable-stream": "~2.3.6",
         "xtend": "~4.0.1"
@@ -4037,12 +4240,14 @@
         "isarray": {
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
-          "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
+          "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=",
+          "optional": true
         },
         "readable-stream": {
           "version": "2.3.6",
           "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
           "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+          "optional": true,
           "requires": {
             "core-util-is": "~1.0.0",
             "inherits": "~2.0.3",
@@ -4057,6 +4262,7 @@
           "version": "1.1.1",
           "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
           "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+          "optional": true,
           "requires": {
             "safe-buffer": "~5.1.0"
           }
@@ -4067,6 +4273,7 @@
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/to-object-path/-/to-object-path-0.3.0.tgz",
       "integrity": "sha1-KXWIt7Dn4KwI4E5nL4XB9JmeF68=",
+      "optional": true,
       "requires": {
         "kind-of": "^3.0.2"
       },
@@ -4075,6 +4282,7 @@
           "version": "3.2.2",
           "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
           "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
+          "optional": true,
           "requires": {
             "is-buffer": "^1.1.5"
           }
@@ -4085,6 +4293,7 @@
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/to-regex/-/to-regex-3.0.2.tgz",
       "integrity": "sha512-FWtleNAtZ/Ki2qtqej2CXTOayOH9bHDQF+Q48VpWyDXjbYxA4Yz8iDB31zXOBUlOHHKidDbqGVrTUvQMPmBGBw==",
+      "optional": true,
       "requires": {
         "define-property": "^2.0.2",
         "extend-shallow": "^3.0.2",
@@ -4096,6 +4305,7 @@
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-2.1.1.tgz",
       "integrity": "sha1-fIDBe53+vlmeJzZ+DU3VWQFB2zg=",
+      "optional": true,
       "requires": {
         "is-number": "^3.0.0",
         "repeat-string": "^1.6.1"
@@ -4120,7 +4330,8 @@
     "traverse": {
       "version": "0.6.6",
       "resolved": "https://registry.npmjs.org/traverse/-/traverse-0.6.6.tgz",
-      "integrity": "sha1-y99WD9e5r2MlAv7UD5GMFX6pcTc="
+      "integrity": "sha1-y99WD9e5r2MlAv7UD5GMFX6pcTc=",
+      "optional": true
     },
     "tslib": {
       "version": "1.9.0",
@@ -4182,12 +4393,14 @@
     "type-name": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/type-name/-/type-name-2.0.2.tgz",
-      "integrity": "sha1-7+fUEj2KxSr/9/QMfk3sUmYAj7Q="
+      "integrity": "sha1-7+fUEj2KxSr/9/QMfk3sUmYAj7Q=",
+      "optional": true
     },
     "typedarray": {
       "version": "0.0.6",
       "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
-      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
+      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
+      "optional": true
     },
     "typescript": {
       "version": "3.3.3333",
@@ -4199,6 +4412,7 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
       "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "optional": true,
       "requires": {
         "arr-union": "^3.1.0",
         "get-value": "^2.0.6",
@@ -4210,6 +4424,7 @@
           "version": "2.0.1",
           "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
           "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
+          "optional": true,
           "requires": {
             "is-extendable": "^0.1.0"
           }
@@ -4218,6 +4433,7 @@
           "version": "0.4.3",
           "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
           "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
+          "optional": true,
           "requires": {
             "extend-shallow": "^2.0.1",
             "is-extendable": "^0.1.1",
@@ -4240,6 +4456,7 @@
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/universal-deep-strict-equal/-/universal-deep-strict-equal-1.2.2.tgz",
       "integrity": "sha1-DaSsL3PP95JMgfpN4BjKViyisKc=",
+      "optional": true,
       "requires": {
         "array-filter": "^1.0.0",
         "indexof": "0.0.1",
@@ -4255,6 +4472,7 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unset-value/-/unset-value-1.0.0.tgz",
       "integrity": "sha1-g3aHP30jNRef+x5vw6jtDfyKtVk=",
+      "optional": true,
       "requires": {
         "has-value": "^0.3.1",
         "isobject": "^3.0.0"
@@ -4264,6 +4482,7 @@
           "version": "0.3.1",
           "resolved": "https://registry.npmjs.org/has-value/-/has-value-0.3.1.tgz",
           "integrity": "sha1-ex9YutpiyoJ+wKIHgCVlSEWZXh8=",
+          "optional": true,
           "requires": {
             "get-value": "^2.0.3",
             "has-values": "^0.1.4",
@@ -4274,6 +4493,7 @@
               "version": "2.1.0",
               "resolved": "https://registry.npmjs.org/isobject/-/isobject-2.1.0.tgz",
               "integrity": "sha1-8GVWEJaj8dou9GJy+BXIQNh+DIk=",
+              "optional": true,
               "requires": {
                 "isarray": "1.0.0"
               }
@@ -4283,12 +4503,14 @@
         "has-values": {
           "version": "0.1.4",
           "resolved": "https://registry.npmjs.org/has-values/-/has-values-0.1.4.tgz",
-          "integrity": "sha1-bWHeldkd/Km5oCCJrThL/49it3E="
+          "integrity": "sha1-bWHeldkd/Km5oCCJrThL/49it3E=",
+          "optional": true
         },
         "isarray": {
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
-          "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
+          "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=",
+          "optional": true
         }
       }
     },
@@ -4303,17 +4525,20 @@
     "urix": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/urix/-/urix-0.1.0.tgz",
-      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI="
+      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
+      "optional": true
     },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
-      "integrity": "sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ=="
+      "integrity": "sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ==",
+      "optional": true
     },
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
+      "optional": true
     },
     "utils-merge": {
       "version": "1.0.1",
@@ -4392,7 +4617,8 @@
     "xdg-basedir": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/xdg-basedir/-/xdg-basedir-3.0.0.tgz",
-      "integrity": "sha1-SWsswQnsqNus/i3HK2A8F8WHCtQ="
+      "integrity": "sha1-SWsswQnsqNus/i3HK2A8F8WHCtQ=",
+      "optional": true
     },
     "xmlhttprequest": {
       "version": "1.8.0",
@@ -4412,7 +4638,8 @@
     "yallist": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
-      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI="
+      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
+      "optional": true
     },
     "yargs": {
       "version": "3.32.0",
diff --git a/functions/yarn.lock b/functions/yarn.lock
index 1e6a0ec..4192ab6 100644
--- a/functions/yarn.lock
+++ b/functions/yarn.lock
@@ -375,9 +375,9 @@ accepts@~1.3.5:
     mime-types "~2.1.18"
     negotiator "0.6.1"
 
-agent-base@^4.1.0:
-  version "4.2.1"
-  resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-4.2.1.tgz#d89e5999f797875674c07d87f260fc41e83e8ca9"
+agent-base@^4.3.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-4.3.0.tgz#8165f01c436009bccad0b1d122f05ed770efc6ee"
   dependencies:
     es6-promisify "^5.0.0"
 
@@ -813,8 +813,8 @@ ent@^2.2.0:
   resolved "https://registry.yarnpkg.com/ent/-/ent-2.2.0.tgz#e964219325a21d05f44466a2f686ed6ce5f5dd1d"
 
 es6-promise@^4.0.3:
-  version "4.2.6"
-  resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-4.2.6.tgz#b685edd8258886365ea62b57d30de28fadcd974f"
+  version "4.2.8"
+  resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-4.2.8.tgz#4eb21594c972bc40553d276e510539143db53e0a"
 
 es6-promisify@^5.0.0:
   version "5.0.0"
@@ -1206,10 +1206,10 @@ http-signature@~1.2.0:
     sshpk "^1.7.0"
 
 https-proxy-agent@^2.2.1:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/https-proxy-agent/-/https-proxy-agent-2.2.1.tgz#51552970fa04d723e04c56d04178c3f92592bbc0"
+  version "2.2.4"
+  resolved "https://registry.yarnpkg.com/https-proxy-agent/-/https-proxy-agent-2.2.4.tgz#4ee7a737abd92678a293d9b34a1af4d0d08c787b"
   dependencies:
-    agent-base "^4.1.0"
+    agent-base "^4.3.0"
     debug "^3.1.0"
 
 iconv-lite@0.4.23:
@@ -1563,10 +1563,14 @@ ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
-ms@^2.0.0, ms@^2.1.1:
+ms@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.1.tgz#30a5864eb3ebb0a66f2ebe6d727af06a09d86e0a"
 
+ms@^2.1.1:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
+
 nan@^2.0.0:
   version "2.13.2"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.13.2.tgz#f51dc7ae66ba7d5d55e1e6d4d8092e802c9aefe7"