diff --git a/package.json b/package.json
index 9207fe6..237722b 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "gh-pages": "^1.0.0",
     "husky": "^0.14.1",
     "jest": "^21.2.1",
-    "lint-staged": "^4.0.0",
+    "lint-staged": "^5.0.0",
     "semantic-release": "^6.3.6",
     "ts-jest": "^21.1.2",
     "tslint": "^5.0.0",
diff --git a/yarn.lock b/yarn.lock
index bab2fb7..b535d54 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -176,6 +176,10 @@ ansi@^0.3.0, ansi@~0.3.0:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/ansi/-/ansi-0.3.1.tgz#0c42d4fb17160d5a9af1e484bace1c66922c1b21"
 
+any-observable@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/any-observable/-/any-observable-0.2.0.tgz#c67870058003579009083f54ac0abafb5c33d242"
+
 any-promise@^1.0.0, any-promise@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/any-promise/-/any-promise-1.3.0.tgz#abc6afeedcea52e809cdc0376aed3ce39635d17f"
@@ -695,6 +699,14 @@ chalk@^2.0.1:
     escape-string-regexp "^1.0.5"
     supports-color "^4.0.0"
 
+chalk@^2.1.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.3.0.tgz#b5ea48efc9c1793dccc9b4767c93914d3f2d52ba"
+  dependencies:
+    ansi-styles "^3.1.0"
+    escape-string-regexp "^1.0.5"
+    supports-color "^4.0.0"
+
 ci-info@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-1.0.0.tgz#dc5285f2b4e251821683681c381c3388f46ec534"
@@ -790,6 +802,10 @@ commander@2.9.0, commander@^2.9.0:
   dependencies:
     graceful-readlink ">= 1.0.0"
 
+commander@^2.11.0:
+  version "2.11.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.11.0.tgz#157152fd1e7a6c8d98a5b715cf376df928004563"
+
 commander@~2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.1.0.tgz#d121bbae860d9992a3d517ba96f56588e47c6781"
@@ -901,18 +917,14 @@ core-util-is@^1.0.1, core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
 
-cosmiconfig@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-1.1.0.tgz#0dea0f9804efdfb929fbb1b188e25553ea053d37"
+cosmiconfig@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-3.1.0.tgz#640a94bf9847f321800403cd273af60665c73397"
   dependencies:
-    graceful-fs "^4.1.2"
-    js-yaml "^3.4.3"
-    minimist "^1.2.0"
-    object-assign "^4.0.1"
-    os-homedir "^1.0.1"
-    parse-json "^2.2.0"
-    pinkie-promise "^2.0.0"
-    require-from-string "^1.1.0"
+    is-directory "^0.3.1"
+    js-yaml "^3.9.0"
+    parse-json "^3.0.0"
+    require-from-string "^2.0.1"
 
 create-error-class@^3.0.0:
   version "3.0.2"
@@ -1062,6 +1074,10 @@ dedent@0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/dedent/-/dedent-0.6.0.tgz#0e6da8f0ce52838ef5cec5c8f9396b0c1b64a3cb"
 
+dedent@^0.7.0:
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/dedent/-/dedent-0.7.0.tgz#2495ddbaf6eb874abb0e1be9df22d2e5a544326c"
+
 deep-extend@~0.4.0:
   version "0.4.2"
   resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.4.2.tgz#48b699c27e334bf89f10892be432f6e4c7d34a7f"
@@ -1175,7 +1191,7 @@ encoding@^0.1.11:
   dependencies:
     prr "~0.0.0"
 
-error-ex@^1.2.0:
+error-ex@^1.2.0, error-ex@^1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.1.tgz#f855a86ce61adc4e8621c3cda21e7a7612c3a8dc"
   dependencies:
@@ -1208,6 +1224,10 @@ esprima@^3.1.1:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/esprima/-/esprima-3.1.3.tgz#fdca51cee6133895e3c88d535ce49dbff62a4633"
 
+esprima@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.0.tgz#4499eddcd1110e0b218bacf2fa7f7f59f55ca804"
+
 estraverse@^1.9.1:
   version "1.9.3"
   resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-1.9.3.tgz#af67f2dc922582415950926091a4005d29c9bb44"
@@ -1273,9 +1293,9 @@ execa@^0.6.0:
     signal-exit "^3.0.0"
     strip-eof "^1.0.0"
 
-execa@^0.7.0:
-  version "0.7.0"
-  resolved "https://registry.yarnpkg.com/execa/-/execa-0.7.0.tgz#944becd34cc41ee32a63a9faf27ad5a65fc59777"
+execa@^0.8.0:
+  version "0.8.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-0.8.0.tgz#d8d76bbc1b55217ed190fd6dd49d3c774ecfc8da"
   dependencies:
     cross-spawn "^5.0.1"
     get-stream "^3.0.0"
@@ -1590,6 +1610,10 @@ get-caller-file@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-1.0.2.tgz#f702e63127e7e231c160a80c1554acb70d5047e5"
 
+get-own-enumerable-property-symbols@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/get-own-enumerable-property-symbols/-/get-own-enumerable-property-symbols-2.0.1.tgz#5c4ad87f2834c4b9b4e84549dc1e0650fb38c24b"
+
 get-port@3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/get-port/-/get-port-3.1.0.tgz#ef01b18a84ca6486970ff99e54446141a73ffd3e"
@@ -1997,6 +2021,10 @@ is-ci@^1.0.10:
   dependencies:
     ci-info "^1.0.0"
 
+is-directory@^0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/is-directory/-/is-directory-0.3.1.tgz#61339b6f2475fc772fd9c9d83f5c8575dc154ae1"
+
 is-dotfile@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-dotfile/-/is-dotfile-1.0.2.tgz#2c132383f39199f8edc268ca01b9b007d205cc4d"
@@ -2015,6 +2043,10 @@ is-extglob@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-1.0.0.tgz#ac468177c4943405a092fc8f29760c6ffc6206c0"
 
+is-extglob@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-2.1.1.tgz#a88c02535791f02ed37c76a1b9ea9773c833f8c2"
+
 is-finite@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-finite/-/is-finite-1.0.2.tgz#cc6677695602be550ef11e8b4aa6305342b6d0aa"
@@ -2037,6 +2069,12 @@ is-glob@^2.0.0, is-glob@^2.0.1:
   dependencies:
     is-extglob "^1.0.0"
 
+is-glob@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-4.0.0.tgz#9521c76845cc2610a85203ddf080a958c2ffabc0"
+  dependencies:
+    is-extglob "^2.1.1"
+
 is-my-json-valid@^2.12.4:
   version "2.16.0"
   resolved "https://registry.yarnpkg.com/is-my-json-valid/-/is-my-json-valid-2.16.0.tgz#f079dd9bfdae65ee2038aae8acbc86ab109e3693"
@@ -2056,10 +2094,16 @@ is-number@^2.0.2, is-number@^2.1.0:
   dependencies:
     kind-of "^3.0.2"
 
-is-obj@^1.0.0:
+is-obj@^1.0.0, is-obj@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-obj/-/is-obj-1.0.1.tgz#3e4729ac1f5fde025cd7d83a896dab9f4f67db0f"
 
+is-observable@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/is-observable/-/is-observable-0.2.0.tgz#b361311d83c6e5d726cabf5e250b0237106f5ae2"
+  dependencies:
+    symbol-observable "^0.2.2"
+
 is-posix-bracket@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/is-posix-bracket/-/is-posix-bracket-0.1.1.tgz#3334dc79774368e92f016e6fbc0a88f5cd6e6bc4"
@@ -2080,6 +2124,10 @@ is-redirect@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-redirect/-/is-redirect-1.0.0.tgz#1d03dded53bd8db0f30c26e4f95d36fc7c87dc24"
 
+is-regexp@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-regexp/-/is-regexp-1.0.0.tgz#fd2d883545c46bac5a633e7b9a09e87fa2cb5069"
+
 is-retry-allowed@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-retry-allowed/-/is-retry-allowed-1.1.0.tgz#11a060568b67339444033d0125a61a20d564fb34"
@@ -2571,7 +2619,7 @@ jest-validate@^20.0.3:
     leven "^2.1.0"
     pretty-format "^20.0.3"
 
-jest-validate@^21.2.1:
+jest-validate@^21.1.0, jest-validate@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-21.2.1.tgz#cc0cbca653cd54937ba4f2a111796774530dd3c7"
   dependencies:
@@ -2596,13 +2644,20 @@ js-tokens@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.1.tgz#08e9f132484a2c45a30907e9dc4d5567b7f114d7"
 
-js-yaml@^3.4.3, js-yaml@^3.7.0:
+js-yaml@^3.7.0:
   version "3.8.4"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.8.4.tgz#520b4564f86573ba96662af85a8cafa7b4b5a6f6"
   dependencies:
     argparse "^1.0.7"
     esprima "^3.1.1"
 
+js-yaml@^3.9.0:
+  version "3.10.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.10.0.tgz#2e78441646bd4682e963f22b6e92823c309c62dc"
+  dependencies:
+    argparse "^1.0.7"
+    esprima "^4.0.0"
+
 jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
@@ -2739,27 +2794,37 @@ levn@~0.3.0:
     prelude-ls "~1.1.2"
     type-check "~0.3.2"
 
-lint-staged@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/lint-staged/-/lint-staged-4.0.0.tgz#c15669f598614a6e68090303e175a799d48e0d85"
+lint-staged@5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/lint-staged/-/lint-staged-5.0.0.tgz#f1c670e03e2fdf3f3d0eb81f72d3bcf658770e54"
   dependencies:
     app-root-path "^2.0.0"
-    cosmiconfig "^1.1.0"
-    execa "^0.7.0"
-    listr "^0.12.0"
-    lodash.chunk "^4.2.0"
+    chalk "^2.1.0"
+    commander "^2.11.0"
+    cosmiconfig "^3.1.0"
+    dedent "^0.7.0"
+    execa "^0.8.0"
+    find-parent-dir "^0.3.0"
+    is-glob "^4.0.0"
+    jest-validate "^21.1.0"
+    listr "^0.13.0"
+    lodash "^4.17.4"
+    log-symbols "^2.0.0"
     minimatch "^3.0.0"
     npm-which "^3.0.1"
     p-map "^1.1.1"
+    path-is-inside "^1.0.2"
+    pify "^3.0.0"
     staged-git-files "0.0.4"
+    stringify-object "^3.2.0"
 
 listr-silent-renderer@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/listr-silent-renderer/-/listr-silent-renderer-1.1.1.tgz#924b5a3757153770bf1a8e3fbf74b8bbf3f9242e"
 
-listr-update-renderer@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/listr-update-renderer/-/listr-update-renderer-0.2.0.tgz#ca80e1779b4e70266807e8eed1ad6abe398550f9"
+listr-update-renderer@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/listr-update-renderer/-/listr-update-renderer-0.4.0.tgz#344d980da2ca2e8b145ba305908f32ae3f4cc8a7"
   dependencies:
     chalk "^1.1.3"
     cli-truncate "^0.2.1"
@@ -2779,25 +2844,26 @@ listr-verbose-renderer@^0.4.0:
     date-fns "^1.27.2"
     figures "^1.7.0"
 
-listr@^0.12.0:
-  version "0.12.0"
-  resolved "https://registry.yarnpkg.com/listr/-/listr-0.12.0.tgz#6bce2c0f5603fa49580ea17cd6a00cc0e5fa451a"
+listr@^0.13.0:
+  version "0.13.0"
+  resolved "https://registry.yarnpkg.com/listr/-/listr-0.13.0.tgz#20bb0ba30bae660ee84cc0503df4be3d5623887d"
   dependencies:
     chalk "^1.1.3"
     cli-truncate "^0.2.1"
     figures "^1.7.0"
     indent-string "^2.1.0"
+    is-observable "^0.2.0"
     is-promise "^2.1.0"
     is-stream "^1.1.0"
     listr-silent-renderer "^1.1.1"
-    listr-update-renderer "^0.2.0"
+    listr-update-renderer "^0.4.0"
     listr-verbose-renderer "^0.4.0"
     log-symbols "^1.0.2"
     log-update "^1.0.2"
     ora "^0.2.3"
     p-map "^1.1.1"
-    rxjs "^5.0.0-beta.11"
-    stream-to-observable "^0.1.0"
+    rxjs "^5.4.2"
+    stream-to-observable "^0.2.0"
     strip-ansi "^3.0.1"
 
 load-json-file@^1.0.0:
@@ -2873,10 +2939,6 @@ lodash.assign@^4.0.3, lodash.assign@^4.0.6:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/lodash.assign/-/lodash.assign-4.2.0.tgz#0d99f3ccd7a6d261d19bdaeb9245005d285808e7"
 
-lodash.chunk@^4.2.0:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/lodash.chunk/-/lodash.chunk-4.2.0.tgz#66e5ce1f76ed27b4303d8c6512e8d1216e8106bc"
-
 lodash.find@^4.6.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/lodash.find/-/lodash.find-4.6.0.tgz#cb0704d47ab71789ffa0de8b97dd926fb88b13b1"
@@ -2939,6 +3001,10 @@ lodash@^3.6.0:
   version "3.10.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
 
+lodash@^4.17.4:
+  version "4.17.4"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
+
 lodash@~1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-1.3.1.tgz#a4663b53686b895ff074e2ba504dfb76a8e2b770"
@@ -2949,6 +3015,12 @@ log-symbols@^1.0.2:
   dependencies:
     chalk "^1.0.0"
 
+log-symbols@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/log-symbols/-/log-symbols-2.1.0.tgz#f35fa60e278832b538dc4dddcbb478a45d3e3be6"
+  dependencies:
+    chalk "^2.0.1"
+
 log-update@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/log-update/-/log-update-1.0.2.tgz#19929f64c4093d2d2e7075a1dad8af59c296b8d1"
@@ -3515,6 +3587,12 @@ parse-json@^2.2.0:
   dependencies:
     error-ex "^1.2.0"
 
+parse-json@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-3.0.0.tgz#fa6f47b18e23826ead32f263e744d0e1e847fb13"
+  dependencies:
+    error-ex "^1.3.1"
+
 parse-passwd@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/parse-passwd/-/parse-passwd-1.0.0.tgz#6d5b934a456993b23d37f40a382d6f1666a8e5c6"
@@ -3541,6 +3619,10 @@ path-is-absolute@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
 
+path-is-inside@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/path-is-inside/-/path-is-inside-1.0.2.tgz#365417dede44430d1c11af61027facf074bdfc53"
+
 path-key@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/path-key/-/path-key-1.0.0.tgz#5d53d578019646c0d68800db4e146e6bdc2ac7af"
@@ -3903,9 +3985,9 @@ require-directory@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/require-directory/-/require-directory-2.1.1.tgz#8c64ad5fd30dab1c976e2344ffe7f792a6a6df42"
 
-require-from-string@^1.1.0:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/require-from-string/-/require-from-string-1.2.1.tgz#529c9ccef27380adfec9a2f965b649bbee636418"
+require-from-string@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/require-from-string/-/require-from-string-2.0.1.tgz#c545233e9d7da6616e9d59adfb39fc9f588676ff"
 
 require-main-filename@^1.0.1:
   version "1.0.1"
@@ -3989,9 +4071,9 @@ rx@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/rx/-/rx-4.1.0.tgz#a5f13ff79ef3b740fe30aa803fb09f98805d4782"
 
-rxjs@^5.0.0-beta.11:
-  version "5.4.0"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.4.0.tgz#a7db14ab157f9d7aac6a56e655e7a3860d39bf26"
+rxjs@^5.4.2:
+  version "5.5.2"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.5.2.tgz#28d403f0071121967f18ad665563255d54236ac3"
   dependencies:
     symbol-observable "^1.0.1"
 
@@ -4273,9 +4355,11 @@ stream-consume@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/stream-consume/-/stream-consume-0.1.0.tgz#a41ead1a6d6081ceb79f65b061901b6d8f3d1d0f"
 
-stream-to-observable@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/stream-to-observable/-/stream-to-observable-0.1.0.tgz#45bf1d9f2d7dc09bed81f1c307c430e68b84cffe"
+stream-to-observable@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/stream-to-observable/-/stream-to-observable-0.2.0.tgz#59d6ea393d87c2c0ddac10aa0d561bc6ba6f0e10"
+  dependencies:
+    any-observable "^0.2.0"
 
 string-length@^2.0.0:
   version "2.0.0"
@@ -4321,6 +4405,14 @@ string_decoder@~1.0.3:
   dependencies:
     safe-buffer "~5.1.0"
 
+stringify-object@^3.2.0:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/stringify-object/-/stringify-object-3.2.1.tgz#2720c2eff940854c819f6ee252aaeb581f30624d"
+  dependencies:
+    get-own-enumerable-property-symbols "^2.0.1"
+    is-obj "^1.0.1"
+    is-regexp "^1.0.0"
+
 stringstream@~0.0.4:
   version "0.0.5"
   resolved "https://registry.yarnpkg.com/stringstream/-/stringstream-0.0.5.tgz#4e484cd4de5a0bbbee18e46307710a8a81621878"
@@ -4381,6 +4473,10 @@ supports-color@^4.0.0:
   dependencies:
     has-flag "^2.0.0"
 
+symbol-observable@^0.2.2:
+  version "0.2.4"
+  resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-0.2.4.tgz#95a83db26186d6af7e7a18dbd9760a2f86d08f40"
+
 symbol-observable@^1.0.1:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.0.4.tgz#29bf615d4aa7121bdd898b22d4b3f9bc4e2aa03d"