diff --git a/package-lock.json b/package-lock.json
index 135b867..709f07f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,9 +11,9 @@
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-      "resolved": "https://registry.npmjs.org/@ava/babel-preset-stage-4/-/babel-preset-stage-4-1.0.0.tgz",
-      "integrity": "sha1-phO14VL1KTBUIlRrBy1H+s+yYpE=",
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@ava/babel-preset-stage-4/-/babel-preset-stage-4-1.1.0.tgz",
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@@ -60,22 +60,71 @@
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-      "resolved": "https://registry.npmjs.org/@ava/pretty-format/-/pretty-format-1.1.0.tgz",
-      "integrity": "sha1-0KV9Jeua6rlkO90aAwZCuRwSPig=",
+    "@ava/write-file-atomic": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/@ava/write-file-atomic/-/write-file-atomic-2.2.0.tgz",
+      "integrity": "sha512-BTNB3nGbEfJT+69wuqXFr/bQH7Vr7ihx2xGOMNqPgDGhwspoZhiWumDDZNjBy7AScmqS5CELIOGtPVXESyrnDA==",
       "dev": true,
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-        "esutils": "^2.0.2"
+        "graceful-fs": "^4.1.11",
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-      "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
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+    "@concordance/react": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@concordance/react/-/react-1.0.0.tgz",
+      "integrity": "sha512-htrsRaQX8Iixlsek8zQU7tE8wcsTQJ5UhZkSPEA8slCDAisKpC/2VgU/ucPn32M5/LjGGXRaUEKvEw1Wiuu4zQ==",
       "dev": true,
-      "optional": true
+      "requires": {
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+    "@ladjs/time-require": {
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+      "resolved": "https://registry.npmjs.org/@ladjs/time-require/-/time-require-0.1.4.tgz",
+      "integrity": "sha512-weIbJqTMfQ4r1YX85u54DKfjLZs2jwn1XZ6tIOP/pFgMwhIN5BAtaCp/1wn9DzyLsDR9tW0R2NIePcVJ45ivQQ==",
+      "dev": true,
+      "requires": {
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+        "date-time": "^0.1.1",
+        "pretty-ms": "^0.2.1",
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+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-1.0.0.tgz",
+          "integrity": "sha1-yxAt8cVvUSPquLZ817mAJ6AnkXg=",
+          "dev": true
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+        "chalk": {
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+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-0.4.0.tgz",
+          "integrity": "sha1-UZmj3c0MHv4jvAjBsCewYXbgxk8=",
+          "dev": true,
+          "requires": {
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+            "has-color": "~0.1.0",
+            "strip-ansi": "~0.1.0"
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+        "pretty-ms": {
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+          "resolved": "https://registry.npmjs.org/pretty-ms/-/pretty-ms-0.2.2.tgz",
+          "integrity": "sha1-2oeaaC/zOjcBEEbxPWJ/Z8c7hPY=",
+          "dev": true,
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+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-0.1.1.tgz",
+          "integrity": "sha1-OeipjQRNFQZgq+SmgIrPcLt7yZE=",
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@@ -97,6 +146,12 @@
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+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
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@@ -104,13 +159,22 @@
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-          "integrity": "sha1-Y1xUNsxypuDDh87KJ41OLuxSaH4=",
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
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+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "dev": true,
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@@ -131,37 +195,19 @@
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-      "integrity": "sha1-o+Uvo5FoyCX/V7AkgSbOWo/5VQc=",
-      "dev": true,
-      "requires": {
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-      "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
-      "integrity": "sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw==",
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-      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.4.tgz",
-      "integrity": "sha1-u13KOCu5TwXhUZQ3PRb9O6HKEQ0=",
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-1.3.2.tgz",
+      "integrity": "sha512-0XNayC8lTHQ2OI8aljNCN3sSx6hsr/1+rlcDAotXJR7C1oZZHCNsfpbKwMjRA3Uqb5tF1Rae2oloTr4xpq+WjA==",
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-        "readable-stream": "^2.0.6"
+        "micromatch": "^2.1.5",
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-      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.9.tgz",
-      "integrity": "sha1-c9g7wmP4bpf4zE9rrhsOkKfSLIY=",
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
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@@ -183,9 +229,9 @@
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-      "integrity": "sha1-onTthawIhJtr14R8RYB0XcUa37E=",
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@@ -257,31 +303,36 @@
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-      "integrity": "sha1-k7hk3H7gGjJigXddXHXKCnUeWWE=",
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+      "resolved": "https://registry.npmjs.org/auto-bind/-/auto-bind-1.2.0.tgz",
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-      "resolved": "https://registry.npmjs.org/ava/-/ava-0.19.1.tgz",
-      "integrity": "sha1-Q92CQ1rRmzmA/8okiPBdqrlAsnM=",
+      "version": "0.25.0",
+      "resolved": "https://registry.npmjs.org/ava/-/ava-0.25.0.tgz",
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       "dev": true,
       "requires": {
-        "@ava/babel-preset-stage-4": "^1.0.0",
+        "@ava/babel-preset-stage-4": "^1.1.0",
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-        "@ava/pretty-format": "^1.1.0",
+        "@ava/write-file-atomic": "^2.2.0",
+        "@concordance/react": "^1.0.0",
+        "@ladjs/time-require": "^0.1.4",
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-        "babel-code-frame": "^6.16.0",
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@@ -289,65 +340,97 @@
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         "figures": "^2.0.0",
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-        "jest-snapshot": "19.0.2",
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-        "time-require": "^0.1.2",
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+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
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+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.1.tgz",
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@@ -358,9 +441,9 @@
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@@ -382,19 +465,34 @@
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+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.0.tgz",
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+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
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-          "integrity": "sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=",
+          "version": "5.4.0",
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           "dev": true,
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@@ -402,16 +500,16 @@
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-      "integrity": "sha1-kwTItMNX1m49/a4fv/R7EZnVxV0=",
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/ava-init/-/ava-init-0.2.1.tgz",
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-        "execa": "^0.5.0",
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@@ -484,56 +582,73 @@
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@@ -7064,6 +7393,12 @@
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+        "ansi-styles": {
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+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.1.tgz",
+          "integrity": "sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==",
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+            "escape-string-regexp": "^1.0.5",
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+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
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@@ -7274,6 +7625,12 @@
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+      "integrity": "sha1-c8eK6Bp3Jqj6WY4ogIAcixYiVRg=",
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@@ -7283,23 +7640,46 @@
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-      "integrity": "sha1-DAnIXCqUaD0Nfq+O4JfVZL8OEFw=",
+      "version": "2.0.0",
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+      "integrity": "sha1-AUKk6KJD+IgsAjOqDgKBqnYVInM=",
       "dev": true,
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+        "string-width": "^2.1.1"
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+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+          "dev": true
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+        "is-fullwidth-code-point": {
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+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
+          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+          "dev": true
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+          "dev": true,
+          "requires": {
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+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "dev": true,
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@@ -7332,16 +7712,16 @@
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-      "integrity": "sha1-UYYlBruzthnu+reFnx/WxtBTCHY=",
+      "version": "2.3.0",
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@@ -7350,17 +7730,23 @@
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-      "integrity": "sha1-NTqkTDnEjCFED1wIzmq9RhQcnAg=",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/write-pkg/-/write-pkg-3.1.0.tgz",
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diff --git a/package.json b/package.json
index 2245279..f8f4d6d 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
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