diff --git a/package.json b/package.json
index 2fab1cb..bcf3d82 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
   },
   "devDependencies": {
     "babel-cli": "^6.26.0",
-    "babel-eslint": "^7.2.3",
+    "babel-eslint": "^8.0.0",
     "babel-plugin-transform-decorators-legacy": "^1.3.4",
     "babel-plugin-transform-object-rest-spread": "^6.26.0",
     "babel-preset-env": "^1.6.0",
diff --git a/yarn.lock b/yarn.lock
index 321433b..51ddcdb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -445,6 +445,14 @@ babel-cli@^6.26.0:
   optionalDependencies:
     chokidar "^1.6.1"
 
+babel-code-frame@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-7.0.0-beta.0.tgz#418a7b5f3f7dc9a4670e61b1158b4c5661bec98d"
+  dependencies:
+    chalk "^2.0.0"
+    esutils "^2.0.2"
+    js-tokens "^3.0.0"
+
 babel-code-frame@^6.11.0, babel-code-frame@^6.22.0, babel-code-frame@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-6.26.0.tgz#63fd43f7dc1e3bb7ce35947db8fe369a3f58c74b"
@@ -477,14 +485,14 @@ babel-core@^6.0.0, babel-core@^6.11.4, babel-core@^6.26.0:
     slash "^1.0.0"
     source-map "^0.5.6"
 
-babel-eslint@^7.2.3:
-  version "7.2.3"
-  resolved "https://registry.yarnpkg.com/babel-eslint/-/babel-eslint-7.2.3.tgz#b2fe2d80126470f5c19442dc757253a897710827"
+babel-eslint@8.0.0:
+  version "8.0.0"
+  resolved "https://registry.yarnpkg.com/babel-eslint/-/babel-eslint-8.0.0.tgz#ce06f385bdfb5b6d7e603f06222f891abd14c240"
   dependencies:
-    babel-code-frame "^6.22.0"
-    babel-traverse "^6.23.1"
-    babel-types "^6.23.0"
-    babylon "^6.17.0"
+    babel-code-frame "7.0.0-beta.0"
+    babel-traverse "7.0.0-beta.0"
+    babel-types "7.0.0-beta.0"
+    babylon "7.0.0-beta.22"
 
 babel-generator@^6.18.0, babel-generator@^6.26.0:
   version "6.26.0"
@@ -558,6 +566,15 @@ babel-helper-explode-class@^6.24.1:
     babel-traverse "^6.24.1"
     babel-types "^6.24.1"
 
+babel-helper-function-name@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-helper-function-name/-/babel-helper-function-name-7.0.0-beta.0.tgz#d1b6779b647e5c5c31ebeb05e13b998e4d352d56"
+  dependencies:
+    babel-helper-get-function-arity "7.0.0-beta.0"
+    babel-template "7.0.0-beta.0"
+    babel-traverse "7.0.0-beta.0"
+    babel-types "7.0.0-beta.0"
+
 babel-helper-function-name@^6.24.1:
   version "6.24.1"
   resolved "https://registry.yarnpkg.com/babel-helper-function-name/-/babel-helper-function-name-6.24.1.tgz#d3475b8c03ed98242a25b48351ab18399d3580a9"
@@ -568,6 +585,12 @@ babel-helper-function-name@^6.24.1:
     babel-traverse "^6.24.1"
     babel-types "^6.24.1"
 
+babel-helper-get-function-arity@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-helper-get-function-arity/-/babel-helper-get-function-arity-7.0.0-beta.0.tgz#9d1ab7213bb5efe1ef1638a8ea1489969b5a8b6e"
+  dependencies:
+    babel-types "7.0.0-beta.0"
+
 babel-helper-get-function-arity@^6.24.1:
   version "6.24.1"
   resolved "https://registry.yarnpkg.com/babel-helper-get-function-arity/-/babel-helper-get-function-arity-6.24.1.tgz#8f7782aa93407c41d3aa50908f89b031b1b6853d"
@@ -653,6 +676,10 @@ babel-loader@^7.1.2:
     loader-utils "^1.0.2"
     mkdirp "^0.5.1"
 
+babel-messages@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-messages/-/babel-messages-7.0.0-beta.0.tgz#6df01296e49fc8fbd0637394326a167f36da817b"
+
 babel-messages@^6.23.0:
   version "6.23.0"
   resolved "https://registry.yarnpkg.com/babel-messages/-/babel-messages-6.23.0.tgz#f3cdf4703858035b2a2951c6ec5edf6c62f2630e"
@@ -1231,6 +1258,15 @@ babel-runtime@6.x.x, babel-runtime@^6.18.0, babel-runtime@^6.2.0, babel-runtime@
     core-js "^2.4.0"
     regenerator-runtime "^0.11.0"
 
+babel-template@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-template/-/babel-template-7.0.0-beta.0.tgz#85083cf9e4395d5e48bf5154d7a8d6991cafecfb"
+  dependencies:
+    babel-traverse "7.0.0-beta.0"
+    babel-types "7.0.0-beta.0"
+    babylon "7.0.0-beta.22"
+    lodash "^4.2.0"
+
 babel-template@^6.16.0, babel-template@^6.24.1, babel-template@^6.26.0, babel-template@^6.3.0, babel-template@^6.7.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-template/-/babel-template-6.26.0.tgz#de03e2d16396b069f46dd9fff8521fb1a0e35e02"
@@ -1241,7 +1277,21 @@ babel-template@^6.16.0, babel-template@^6.24.1, babel-template@^6.26.0, babel-te
     babylon "^6.18.0"
     lodash "^4.17.4"
 
-babel-traverse@^6.18.0, babel-traverse@^6.23.1, babel-traverse@^6.24.1, babel-traverse@^6.26.0:
+babel-traverse@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-traverse/-/babel-traverse-7.0.0-beta.0.tgz#da14be9b762f62a2f060db464eaafdd8cd072a41"
+  dependencies:
+    babel-code-frame "7.0.0-beta.0"
+    babel-helper-function-name "7.0.0-beta.0"
+    babel-messages "7.0.0-beta.0"
+    babel-types "7.0.0-beta.0"
+    babylon "7.0.0-beta.22"
+    debug "^3.0.1"
+    globals "^10.0.0"
+    invariant "^2.2.0"
+    lodash "^4.2.0"
+
+babel-traverse@^6.18.0, babel-traverse@^6.24.1, babel-traverse@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-traverse/-/babel-traverse-6.26.0.tgz#46a9cbd7edcc62c8e5c064e2d2d8d0f4035766ee"
   dependencies:
@@ -1255,7 +1305,15 @@ babel-traverse@^6.18.0, babel-traverse@^6.23.1, babel-traverse@^6.24.1, babel-tr
     invariant "^2.2.2"
     lodash "^4.17.4"
 
-babel-types@^6.18.0, babel-types@^6.19.0, babel-types@^6.23.0, babel-types@^6.24.1, babel-types@^6.26.0:
+babel-types@7.0.0-beta.0:
+  version "7.0.0-beta.0"
+  resolved "https://registry.yarnpkg.com/babel-types/-/babel-types-7.0.0-beta.0.tgz#eb8b6e556470e6dcc4aef982d79ad229469b5169"
+  dependencies:
+    esutils "^2.0.2"
+    lodash "^4.2.0"
+    to-fast-properties "^2.0.0"
+
+babel-types@^6.18.0, babel-types@^6.19.0, babel-types@^6.24.1, babel-types@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-types/-/babel-types-6.26.0.tgz#a3b073f94ab49eb6fa55cd65227a334380632497"
   dependencies:
@@ -1264,7 +1322,11 @@ babel-types@^6.18.0, babel-types@^6.19.0, babel-types@^6.23.0, babel-types@^6.24
     lodash "^4.17.4"
     to-fast-properties "^1.0.3"
 
-babylon@^6.17.0, babylon@^6.18.0:
+babylon@7.0.0-beta.22:
+  version "7.0.0-beta.22"
+  resolved "https://registry.yarnpkg.com/babylon/-/babylon-7.0.0-beta.22.tgz#74f0ad82ed7c7c3cfeab74cf684f815104161b65"
+
+babylon@^6.18.0:
   version "6.18.0"
   resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.18.0.tgz#af2f3b88fa6f5c1e4c634d1a0f8eac4f55b395e3"
 
@@ -2467,7 +2529,7 @@ debug@~0.7.4:
   version "0.7.4"
   resolved "https://registry.yarnpkg.com/debug/-/debug-0.7.4.tgz#06e1ea8082c2cb14e39806e22e2f6f757f92af39"
 
-debuglog@*, debuglog@^1.0.1:
+debuglog@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/debuglog/-/debuglog-1.0.1.tgz#aa24ffb9ac3df9a2351837cfb2d279360cd78492"
 
@@ -3725,6 +3787,10 @@ global@^4.3.0:
     min-document "^2.19.0"
     process "~0.5.1"
 
+globals@^10.0.0:
+  version "10.1.0"
+  resolved "https://registry.yarnpkg.com/globals/-/globals-10.1.0.tgz#4425a1881be0d336b4a823a82a7be725d5dd987c"
+
 globals@^9.17.0, globals@^9.18.0:
   version "9.18.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-9.18.0.tgz#aa3896b3e69b487f17e31ed2143d69a8e30c2d8a"
@@ -4012,11 +4078,7 @@ home-or-tmp@^2.0.0:
     os-homedir "^1.0.0"
     os-tmpdir "^1.0.1"
 
-hosted-git-info@^2.1.4, hosted-git-info@^2.1.5, hosted-git-info@^2.4.2:
-  version "2.5.0"
-  resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.5.0.tgz#6d60e34b3abbc8313062c3b798ef8d901a07af3c"
-
-hosted-git-info@~2.4.2:
+hosted-git-info@^2.1.4, hosted-git-info@^2.1.5, hosted-git-info@~2.4.2:
   version "2.4.2"
   resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.4.2.tgz#0076b9f46a270506ddbaaea56496897460612a67"
 
@@ -4152,7 +4214,7 @@ immutable@^3.7.6, immutable@^3.8.1:
   version "3.8.1"
   resolved "https://registry.yarnpkg.com/immutable/-/immutable-3.8.1.tgz#200807f11ab0f72710ea485542de088075f68cd2"
 
-imurmurhash@*, imurmurhash@^0.1.4:
+imurmurhash@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/imurmurhash/-/imurmurhash-0.1.4.tgz#9218b9b2b928a238b13dc4fb6b6d576f231453ea"
 
@@ -5268,10 +5330,6 @@ lodash-es@^4.2.0, lodash-es@^4.2.1:
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash-es/-/lodash-es-4.17.4.tgz#dcc1d7552e150a0640073ba9cb31d70f032950e7"
 
-lodash._baseindexof@*:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/lodash._baseindexof/-/lodash._baseindexof-3.1.0.tgz#fe52b53a1c6761e42618d654e4a25789ed61822c"
-
 lodash._baseuniq@~4.6.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/lodash._baseuniq/-/lodash._baseuniq-4.6.0.tgz#0ebb44e456814af7905c6212fa2c9b2d51b841e8"
@@ -5279,25 +5337,11 @@ lodash._baseuniq@~4.6.0:
     lodash._createset "~4.0.0"
     lodash._root "~3.0.0"
 
-lodash._bindcallback@*:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/lodash._bindcallback/-/lodash._bindcallback-3.0.1.tgz#e531c27644cf8b57a99e17ed95b35c748789392e"
-
-lodash._cacheindexof@*:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/lodash._cacheindexof/-/lodash._cacheindexof-3.0.2.tgz#3dc69ac82498d2ee5e3ce56091bafd2adc7bde92"
-
-lodash._createcache@*:
-  version "3.1.2"
-  resolved "https://registry.yarnpkg.com/lodash._createcache/-/lodash._createcache-3.1.2.tgz#56d6a064017625e79ebca6b8018e17440bdcf093"
-  dependencies:
-    lodash._getnative "^3.0.0"
-
 lodash._createset@~4.0.0:
   version "4.0.3"
   resolved "https://registry.yarnpkg.com/lodash._createset/-/lodash._createset-4.0.3.tgz#0f4659fbb09d75194fa9e2b88a6644d363c9fe26"
 
-lodash._getnative@*, lodash._getnative@^3.0.0:
+lodash._getnative@^3.0.0:
   version "3.9.1"
   resolved "https://registry.yarnpkg.com/lodash._getnative/-/lodash._getnative-3.9.1.tgz#570bc7dede46d61cdcde687d65d3eecbaa3aaff5"
 
@@ -5357,10 +5401,6 @@ lodash.pick@^4.2.1:
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/lodash.pick/-/lodash.pick-4.4.0.tgz#52f05610fff9ded422611441ed1fc123a03001b3"
 
-lodash.restparam@*:
-  version "3.6.1"
-  resolved "https://registry.yarnpkg.com/lodash.restparam/-/lodash.restparam-3.6.1.tgz#936a4e309ef330a7645ed4145986c85ae5b20805"
-
 lodash.template@^4.0.2, lodash.template@^4.2.4, lodash.template@^4.4.0:
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/lodash.template/-/lodash.template-4.4.0.tgz#e73a0385c8355591746e020b99679c690e68fba0"
@@ -5669,7 +5709,7 @@ minimatch@^3.0.0, minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4, minimatc
   dependencies:
     brace-expansion "^1.1.7"
 
-minimist@0.0.8:
+minimist@0.0.8, minimist@~0.0.1:
   version "0.0.8"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
 
@@ -5677,10 +5717,6 @@ minimist@1.2.0, minimist@^1.1.1, minimist@^1.1.3, minimist@^1.2.0, minimist@~1.2
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
 
-minimist@~0.0.1:
-  version "0.0.10"
-  resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.10.tgz#de3f98543dbf96082be48ad1a0c7cda836301dcf"
-
 mississippi@~1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/mississippi/-/mississippi-1.3.0.tgz#d201583eb12327e3c5c1642a404a9cacf94e34f5"
@@ -5849,20 +5885,13 @@ no-case@^2.2.0:
   dependencies:
     lower-case "^1.1.1"
 
-node-fetch@1.6.3:
+node-fetch@1.6.3, node-fetch@^1.0.1:
   version "1.6.3"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.6.3.tgz#dc234edd6489982d58e8f0db4f695029abcd8c04"
   dependencies:
     encoding "^0.1.11"
     is-stream "^1.0.1"
 
-node-fetch@^1.0.1:
-  version "1.7.3"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.7.3.tgz#980f6f72d85211a5347c6b2bc18c5b84c3eb47ef"
-  dependencies:
-    encoding "^0.1.11"
-    is-stream "^1.0.1"
-
 node-gyp@^3.3.1, node-gyp@~3.6.0:
   version "3.6.2"
   resolved "https://registry.yarnpkg.com/node-gyp/-/node-gyp-3.6.2.tgz#9bfbe54562286284838e750eac05295853fa1c60"
@@ -6070,22 +6099,13 @@ npm-install-checks@~3.0.0:
   dependencies:
     semver "^2.3.0 || 3.x || 4 || 5"
 
-"npm-package-arg@^3.0.0 || ^4.0.0", npm-package-arg@^4.1.1, npm-package-arg@~4.2.1:
+"npm-package-arg@^3.0.0 || ^4.0.0", "npm-package-arg@^3.0.0 || ^4.0.0 || ^5.0.0", "npm-package-arg@^4.0.0 || ^5.0.0", npm-package-arg@^4.1.1, npm-package-arg@~4.2.1:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/npm-package-arg/-/npm-package-arg-4.2.1.tgz#593303fdea85f7c422775f17f9eb7670f680e3ec"
   dependencies:
     hosted-git-info "^2.1.5"
     semver "^5.1.0"
 
-"npm-package-arg@^3.0.0 || ^4.0.0 || ^5.0.0", "npm-package-arg@^4.0.0 || ^5.0.0":
-  version "5.1.2"
-  resolved "https://registry.yarnpkg.com/npm-package-arg/-/npm-package-arg-5.1.2.tgz#fb18d17bb61e60900d6312619919bd753755ab37"
-  dependencies:
-    hosted-git-info "^2.4.2"
-    osenv "^0.1.4"
-    semver "^5.1.0"
-    validate-npm-package-name "^3.0.0"
-
 npm-path@^2.0.2:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/npm-path/-/npm-path-2.0.3.tgz#15cff4e1c89a38da77f56f6055b24f975dfb2bbe"
@@ -7448,18 +7468,14 @@ qs@6.5.0:
   version "6.5.0"
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.0.tgz#8d04954d364def3efc55b5a0793e1e2c8b1e6e49"
 
-qs@^6.1.0, qs@^6.2.0:
-  version "6.5.1"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.1.tgz#349cdf6eef89ec45c12d7d5eb3fc0c870343a6d8"
+qs@^6.1.0, qs@^6.2.0, qs@~6.4.0:
+  version "6.4.0"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.4.0.tgz#13e26d28ad6b0ffaa91312cd3bf708ed351e7233"
 
 qs@~6.2.0:
   version "6.2.3"
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.2.3.tgz#1cfcb25c10a9b2b483053ff39f5dfc9233908cfe"
 
-qs@~6.4.0:
-  version "6.4.0"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-6.4.0.tgz#13e26d28ad6b0ffaa91312cd3bf708ed351e7233"
-
 query-string@^3.0.0:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/query-string/-/query-string-3.0.3.tgz#ae2e14b4d05071d4e9b9eb4873c35b0dcd42e638"
@@ -7935,7 +7951,7 @@ readable-stream@~2.2.9:
     string_decoder "~1.0.0"
     util-deprecate "~1.0.1"
 
-readdir-scoped-modules@*, readdir-scoped-modules@^1.0.0:
+readdir-scoped-modules@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/readdir-scoped-modules/-/readdir-scoped-modules-1.0.2.tgz#9fafa37d286be5d92cbaebdee030dc9b5f406747"
   dependencies:
@@ -9204,6 +9220,10 @@ to-fast-properties@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.3.tgz#b83571fa4d8c25b82e231b06e3a3055de4ca1a47"
 
+to-fast-properties@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-2.0.0.tgz#dc5e698cbd079265bc73e0377681a4e4e83f616e"
+
 toml-js@0.0.8:
   version "0.0.8"
   resolved "https://registry.yarnpkg.com/toml-js/-/toml-js-0.0.8.tgz#648ea6f1a4d63b19c0bb30b8ed03e40d09473b0a"
@@ -9603,7 +9623,7 @@ v8flags@^2.1.1:
   dependencies:
     user-home "^1.1.1"
 
-validate-npm-package-license@*, validate-npm-package-license@^3.0.1:
+validate-npm-package-license@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/validate-npm-package-license/-/validate-npm-package-license-3.0.1.tgz#2804babe712ad3379459acfbe24746ab2c303fbc"
   dependencies:
@@ -9889,11 +9909,7 @@ whatwg-encoding@^1.0.1:
   dependencies:
     iconv-lite "0.4.13"
 
-whatwg-fetch@>=0.10.0:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.3.tgz#9c84ec2dcf68187ff00bc64e1274b442176e1c84"
-
-whatwg-fetch@^1.0.0:
+whatwg-fetch@>=0.10.0, whatwg-fetch@^1.0.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-1.1.1.tgz#ac3c9d39f320c6dce5339969d054ef43dd333319"