diff --git a/package-lock.json b/package-lock.json
index 34ce7c4..74970f9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1389,9 +1389,9 @@
       "dev": true
     },
     "concat-stream": {
-      "version": "1.6.0",
-      "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-1.6.0.tgz",
-      "integrity": "sha1-CqxmL9Ur54lk1VMvaUeE5wEQrPc=",
+      "version": "1.6.1",
+      "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-1.6.1.tgz",
+      "integrity": "sha512-gslSSJx03QKa59cIKqeJO9HQ/WZMotvYJCuaUULrLpjj8oG40kV2Z+gz82pVxlTkOADi4PJxQPPfhl1ELYrrXw==",
       "dev": true,
       "requires": {
         "inherits": "2.0.3",
@@ -1888,21 +1888,21 @@
       }
     },
     "eslint": {
-      "version": "4.18.1",
-      "resolved": "https://registry.npmjs.org/eslint/-/eslint-4.18.1.tgz",
-      "integrity": "sha512-gPSfpSRCHre1GLxGmO68tZNxOlL2y7xBd95VcLD+Eo4S2js31YoMum3CAQIOaxY24hqYOMksMvW38xuuWKQTgw==",
+      "version": "4.19.0",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-4.19.0.tgz",
+      "integrity": "sha512-r83L5CuqaocDvfwdojbz68b6tCUk8KJkqfppO+gmSAQqYCzTr0bCSMu6A6yFCLKG65j5eKcKUw4Cw4Yl4gfWkg==",
       "dev": true,
       "requires": {
         "ajv": "5.5.0",
         "babel-code-frame": "6.26.0",
-        "chalk": "2.3.1",
-        "concat-stream": "1.6.0",
+        "chalk": "2.3.2",
+        "concat-stream": "1.6.1",
         "cross-spawn": "5.1.0",
         "debug": "3.1.0",
         "doctrine": "2.1.0",
         "eslint-scope": "3.7.1",
         "eslint-visitor-keys": "1.0.0",
-        "espree": "3.5.3",
+        "espree": "3.5.4",
         "esquery": "1.0.0",
         "esutils": "2.0.2",
         "file-entry-cache": "2.0.0",
@@ -1924,6 +1924,7 @@
         "path-is-inside": "1.0.2",
         "pluralize": "7.0.0",
         "progress": "2.0.0",
+        "regexpp": "1.0.1",
         "require-uncached": "1.0.3",
         "semver": "5.4.1",
         "strip-ansi": "4.0.0",
@@ -1939,23 +1940,23 @@
           "dev": true
         },
         "ansi-styles": {
-          "version": "3.2.0",
-          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.0.tgz",
-          "integrity": "sha512-NnSOmMEYtVR2JVMIGTzynRkkaxtiq1xnFBcdQD/DnNCYPoEPsVJhM98BDyaoNOQIi7p4okdi3E27eN7GQbsUug==",
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
           "dev": true,
           "requires": {
             "color-convert": "1.9.1"
           }
         },
         "chalk": {
-          "version": "2.3.1",
-          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.3.1.tgz",
-          "integrity": "sha512-QUU4ofkDoMIVO7hcx1iPTISs88wsO8jA92RQIm4JAwZvFGGAV2hSAA1NX7oVj2Ej2Q6NDTcRDjPTFrMCRZoJ6g==",
+          "version": "2.3.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.3.2.tgz",
+          "integrity": "sha512-ZM4j2/ld/YZDc3Ma8PgN7gyAk+kHMMMyzLNryCPGhWrsfAuDVeuid5bpRFTDgMH9JBK2lA4dyyAkkZYF/WcqDQ==",
           "dev": true,
           "requires": {
-            "ansi-styles": "3.2.0",
+            "ansi-styles": "3.2.1",
             "escape-string-regexp": "1.0.5",
-            "supports-color": "5.2.0"
+            "supports-color": "5.3.0"
           }
         },
         "debug": {
@@ -1989,9 +1990,9 @@
           }
         },
         "supports-color": {
-          "version": "5.2.0",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.2.0.tgz",
-          "integrity": "sha512-F39vS48la4YvTZUPVeTqsjsFNrvcMwrV3RLZINsmHo+7djCvuUzSIeXOnZ5hmjef4bajL1dNccN+tg5XAliO5Q==",
+          "version": "5.3.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.3.0.tgz",
+          "integrity": "sha512-0aP01LLIskjKs3lq52EC0aGBAJhLq7B2Rd8HC/DR/PtNNpcLilNmHC12O+hu0usQpo7wtHNRqtrhBwtDb0+dNg==",
           "dev": true,
           "requires": {
             "has-flag": "3.0.0"
@@ -2022,19 +2023,19 @@
       "dev": true
     },
     "espree": {
-      "version": "3.5.3",
-      "resolved": "https://registry.npmjs.org/espree/-/espree-3.5.3.tgz",
-      "integrity": "sha512-Zy3tAJDORxQZLl2baguiRU1syPERAIg0L+JB2MWorORgTu/CplzvxS9WWA7Xh4+Q+eOQihNs/1o1Xep8cvCxWQ==",
+      "version": "3.5.4",
+      "resolved": "https://registry.npmjs.org/espree/-/espree-3.5.4.tgz",
+      "integrity": "sha512-yAcIQxtmMiB/jL32dzEp2enBeidsB7xWPLNiw3IIkpVds1P+h7qF9YwJq1yUNzp2OKXgAprs4F61ih66UsoD1A==",
       "dev": true,
       "requires": {
-        "acorn": "5.4.1",
+        "acorn": "5.5.3",
         "acorn-jsx": "3.0.1"
       },
       "dependencies": {
         "acorn": {
-          "version": "5.4.1",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.4.1.tgz",
-          "integrity": "sha512-XLmq3H/BVvW6/GbxKryGxWORz1ebilSsUDlyC27bXhWGWAZWkGwS6FLHjOlwFXNFoWFQEO/Df4u0YYd0K3BQgQ==",
+          "version": "5.5.3",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.5.3.tgz",
+          "integrity": "sha512-jd5MkIUlbbmb07nXH0DT3y7rDVtkzDi4XZOUVWAer8ajmF/DTSSbl5oNFyDOl/OXA33Bl79+ypHhl2pN20VeOQ==",
           "dev": true
         }
       }
@@ -3537,7 +3538,7 @@
       "dev": true,
       "requires": {
         "ansi-escapes": "3.0.0",
-        "chalk": "2.3.1",
+        "chalk": "2.3.2",
         "cli-cursor": "2.1.0",
         "cli-width": "2.2.0",
         "external-editor": "2.1.0",
@@ -3559,23 +3560,23 @@
           "dev": true
         },
         "ansi-styles": {
-          "version": "3.2.0",
-          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.0.tgz",
-          "integrity": "sha512-NnSOmMEYtVR2JVMIGTzynRkkaxtiq1xnFBcdQD/DnNCYPoEPsVJhM98BDyaoNOQIi7p4okdi3E27eN7GQbsUug==",
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
           "dev": true,
           "requires": {
             "color-convert": "1.9.1"
           }
         },
         "chalk": {
-          "version": "2.3.1",
-          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.3.1.tgz",
-          "integrity": "sha512-QUU4ofkDoMIVO7hcx1iPTISs88wsO8jA92RQIm4JAwZvFGGAV2hSAA1NX7oVj2Ej2Q6NDTcRDjPTFrMCRZoJ6g==",
+          "version": "2.3.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.3.2.tgz",
+          "integrity": "sha512-ZM4j2/ld/YZDc3Ma8PgN7gyAk+kHMMMyzLNryCPGhWrsfAuDVeuid5bpRFTDgMH9JBK2lA4dyyAkkZYF/WcqDQ==",
           "dev": true,
           "requires": {
-            "ansi-styles": "3.2.0",
+            "ansi-styles": "3.2.1",
             "escape-string-regexp": "1.0.5",
-            "supports-color": "5.2.0"
+            "supports-color": "5.3.0"
           }
         },
         "has-flag": {
@@ -3610,9 +3611,9 @@
           }
         },
         "supports-color": {
-          "version": "5.2.0",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.2.0.tgz",
-          "integrity": "sha512-F39vS48la4YvTZUPVeTqsjsFNrvcMwrV3RLZINsmHo+7djCvuUzSIeXOnZ5hmjef4bajL1dNccN+tg5XAliO5Q==",
+          "version": "5.3.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.3.0.tgz",
+          "integrity": "sha512-0aP01LLIskjKs3lq52EC0aGBAJhLq7B2Rd8HC/DR/PtNNpcLilNmHC12O+hu0usQpo7wtHNRqtrhBwtDb0+dNg==",
           "dev": true,
           "requires": {
             "has-flag": "3.0.0"
@@ -5988,6 +5989,12 @@
         "is-equal-shallow": "0.1.3"
       }
     },
+    "regexpp": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/regexpp/-/regexpp-1.0.1.tgz",
+      "integrity": "sha512-8Ph721maXiOYSLtaDGKVmDn5wdsNaF6Px85qFNeMPQq0r8K5Y10tgP6YuR65Ws35n4DvzFcCxEnRNBIXQunzLw==",
+      "dev": true
+    },
     "regexpu-core": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/regexpu-core/-/regexpu-core-2.0.0.tgz",
@@ -6543,7 +6550,7 @@
       "requires": {
         "ajv": "5.5.0",
         "ajv-keywords": "2.1.1",
-        "chalk": "2.3.1",
+        "chalk": "2.3.2",
         "lodash": "4.17.4",
         "slice-ansi": "1.0.0",
         "string-width": "2.1.1"
@@ -6556,23 +6563,23 @@
           "dev": true
         },
         "ansi-styles": {
-          "version": "3.2.0",
-          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.0.tgz",
-          "integrity": "sha512-NnSOmMEYtVR2JVMIGTzynRkkaxtiq1xnFBcdQD/DnNCYPoEPsVJhM98BDyaoNOQIi7p4okdi3E27eN7GQbsUug==",
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
           "dev": true,
           "requires": {
             "color-convert": "1.9.1"
           }
         },
         "chalk": {
-          "version": "2.3.1",
-          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.3.1.tgz",
-          "integrity": "sha512-QUU4ofkDoMIVO7hcx1iPTISs88wsO8jA92RQIm4JAwZvFGGAV2hSAA1NX7oVj2Ej2Q6NDTcRDjPTFrMCRZoJ6g==",
+          "version": "2.3.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.3.2.tgz",
+          "integrity": "sha512-ZM4j2/ld/YZDc3Ma8PgN7gyAk+kHMMMyzLNryCPGhWrsfAuDVeuid5bpRFTDgMH9JBK2lA4dyyAkkZYF/WcqDQ==",
           "dev": true,
           "requires": {
-            "ansi-styles": "3.2.0",
+            "ansi-styles": "3.2.1",
             "escape-string-regexp": "1.0.5",
-            "supports-color": "5.2.0"
+            "supports-color": "5.3.0"
           }
         },
         "has-flag": {
@@ -6607,9 +6614,9 @@
           }
         },
         "supports-color": {
-          "version": "5.2.0",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.2.0.tgz",
-          "integrity": "sha512-F39vS48la4YvTZUPVeTqsjsFNrvcMwrV3RLZINsmHo+7djCvuUzSIeXOnZ5hmjef4bajL1dNccN+tg5XAliO5Q==",
+          "version": "5.3.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.3.0.tgz",
+          "integrity": "sha512-0aP01LLIskjKs3lq52EC0aGBAJhLq7B2Rd8HC/DR/PtNNpcLilNmHC12O+hu0usQpo7wtHNRqtrhBwtDb0+dNg==",
           "dev": true,
           "requires": {
             "has-flag": "3.0.0"
diff --git a/package.json b/package.json
index ac21ffd..49cec8d 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "babel-preset-env": "~1.6.1",
     "babel-register": "~6.26.0",
     "clean-webpack-plugin": "~0.1.18",
-    "eslint": "~4.18.0",
+    "eslint": "~4.19.0",
     "eslint-config-google": "^0.9.1",
     "jest": "~22.4.2",
     "webpack": "~3.11.0"
diff --git a/yarn.lock b/yarn.lock
index eb90b23..3e6cd3d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -48,10 +48,14 @@ acorn@^4.0.3:
   version "4.0.13"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-4.0.13.tgz#105495ae5361d697bd195c825192e1ad7f253787"
 
-acorn@^5.0.0, acorn@^5.1.2, acorn@^5.2.1:
+acorn@^5.0.0, acorn@^5.1.2:
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.2.1.tgz#317ac7821826c22c702d66189ab8359675f135d7"
 
+acorn@^5.5.0:
+  version "5.5.3"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.5.3.tgz#f473dd47e0277a08e28e9bec5aeeb04751f0b8c9"
+
 ajv-keywords@^2.1.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-2.1.1.tgz#617997fc5f60576894c435f940d819e135b80762"
@@ -1649,9 +1653,9 @@ eslint-visitor-keys@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#3f3180fb2e291017716acb4c9d6d5b5c34a6a81d"
 
-eslint@~4.18.0:
-  version "4.18.1"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-4.18.1.tgz#b9138440cb1e98b2f44a0d578c6ecf8eae6150b0"
+eslint@~4.19.0:
+  version "4.19.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-4.19.0.tgz#9e900efb5506812ac374557034ef6f5c3642fc4c"
   dependencies:
     ajv "^5.3.0"
     babel-code-frame "^6.22.0"
@@ -1662,7 +1666,7 @@ eslint@~4.18.0:
     doctrine "^2.1.0"
     eslint-scope "^3.7.1"
     eslint-visitor-keys "^1.0.0"
-    espree "^3.5.2"
+    espree "^3.5.4"
     esquery "^1.0.0"
     esutils "^2.0.2"
     file-entry-cache "^2.0.0"
@@ -1684,18 +1688,19 @@ eslint@~4.18.0:
     path-is-inside "^1.0.2"
     pluralize "^7.0.0"
     progress "^2.0.0"
+    regexpp "^1.0.1"
     require-uncached "^1.0.3"
     semver "^5.3.0"
     strip-ansi "^4.0.0"
     strip-json-comments "~2.0.1"
-    table "^4.0.1"
+    table "4.0.2"
     text-table "~0.2.0"
 
-espree@^3.5.2:
-  version "3.5.2"
-  resolved "https://registry.yarnpkg.com/espree/-/espree-3.5.2.tgz#756ada8b979e9dcfcdb30aad8d1a9304a905e1ca"
+espree@^3.5.4:
+  version "3.5.4"
+  resolved "https://registry.yarnpkg.com/espree/-/espree-3.5.4.tgz#b0f447187c8a8bed944b815a660bddf5deb5d1a7"
   dependencies:
-    acorn "^5.2.1"
+    acorn "^5.5.0"
     acorn-jsx "^3.0.0"
 
 esprima@^3.1.3:
@@ -3597,6 +3602,10 @@ regex-cache@^0.4.2:
   dependencies:
     is-equal-shallow "^0.1.3"
 
+regexpp@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/regexpp/-/regexpp-1.0.1.tgz#d857c3a741dce075c2848dcb019a0a975b190d43"
+
 regexpu-core@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/regexpu-core/-/regexpu-core-2.0.0.tgz#49d038837b8dcf8bfa5b9a42139938e6ea2ae240"
@@ -4030,7 +4039,7 @@ symbol-tree@^3.2.1:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/symbol-tree/-/symbol-tree-3.2.2.tgz#ae27db38f660a7ae2e1c3b7d1bc290819b8519e6"
 
-table@^4.0.1:
+table@4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/table/-/table-4.0.2.tgz#a33447375391e766ad34d3486e6e2aedc84d2e36"
   dependencies: