diff --git a/package-lock.json b/package-lock.json
index b3182ac..9162c16 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -62,7 +62,6 @@
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-					"dev": true,
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+					"dev": true
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@@ -1792,14 +1790,12 @@
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 					"bundled": true,
-					"dev": true,
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+					"dev": true
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@@ -1814,20 +1810,17 @@
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 					"bundled": true,
-					"dev": true,
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+					"dev": true
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 					"bundled": true,
-					"dev": true,
-					"optional": true
+					"dev": true
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 				"console-control-strings": {
 					"version": "1.1.0",
 					"bundled": true,
-					"dev": true,
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@@ -1944,8 +1937,7 @@
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 					"bundled": true,
-					"dev": true,
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+					"dev": true
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@@ -1957,7 +1949,6 @@
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@@ -1972,7 +1963,6 @@
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@@ -1980,14 +1970,12 @@
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 					"bundled": true,
-					"dev": true,
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+					"dev": true
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@@ -2006,7 +1994,6 @@
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+					"dev": true
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@@ -2100,7 +2086,6 @@
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@@ -2186,8 +2171,7 @@
 				"safe-buffer": {
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@@ -2223,7 +2207,6 @@
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@@ -2243,7 +2226,6 @@
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@@ -2287,14 +2269,12 @@
 				"wrappy": {
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 					"bundled": true,
-					"dev": true,
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+					"dev": true
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 				"yallist": {
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 					"bundled": true,
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@@ -3063,13 +3043,13 @@
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-			"integrity": "sha1-DQgykO5BEs7Pt4Dfb/gTMu03MgE=",
+			"version": "23.1.0",
+			"resolved": "https://registry.npmjs.org/jest/-/jest-23.1.0.tgz",
+			"integrity": "sha1-u7f4kxAKEadC3YvQ0EelSwlorRo=",
 			"dev": true,
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+				"jest-cli": "^23.1.0"
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@@ -3079,23 +3059,23 @@
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-					"integrity": "sha1-mRMfL9kRVZX4zDaXQB5/BzTUX+8=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/expect/-/expect-23.1.0.tgz",
+					"integrity": "sha1-v9/VeiogFw2HWZnul4fMcfAcIF8=",
 					"dev": true,
 					"requires": {
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 						"jest-get-type": "^22.1.0",
 						"jest-matcher-utils": "^23.0.1",
-						"jest-message-util": "^23.0.0",
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 				"jest-cli": {
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-					"integrity": "sha1-NRpbpRzyjs8gM22XowuXDR9TClY=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-cli/-/jest-cli-23.1.0.tgz",
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@@ -3110,18 +3090,19 @@
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-						"jest-config": "^23.0.1",
-						"jest-environment-jsdom": "^23.0.1",
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-						"jest-haste-map": "^23.0.1",
-						"jest-message-util": "^23.0.0",
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 						"jest-resolve-dependencies": "^23.0.1",
-						"jest-runner": "^23.0.1",
-						"jest-runtime": "^23.0.1",
+						"jest-runner": "^23.1.0",
+						"jest-runtime": "^23.1.0",
 						"jest-snapshot": "^23.0.1",
-						"jest-util": "^23.0.1",
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 						"jest-validate": "^23.0.1",
+						"jest-watcher": "^23.1.0",
 						"jest-worker": "^23.0.1",
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@@ -3135,22 +3116,22 @@
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-					"integrity": "sha1-Z5i/8SR8ejkLEycZMwUAFYL8WPo=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-config/-/jest-config-23.1.0.tgz",
+					"integrity": "sha1-cIyg9DHTVu5CT7SJXTMIAGvdgkE=",
 					"dev": true,
 					"requires": {
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-						"jest-environment-jsdom": "^23.0.1",
-						"jest-environment-node": "^23.0.1",
+						"jest-environment-jsdom": "^23.1.0",
+						"jest-environment-node": "^23.1.0",
 						"jest-get-type": "^22.1.0",
-						"jest-jasmine2": "^23.0.1",
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 						"jest-regex-util": "^23.0.0",
-						"jest-resolve": "^23.0.1",
-						"jest-util": "^23.0.1",
+						"jest-resolve": "^23.1.0",
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@@ -3168,42 +3149,42 @@
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-					"integrity": "sha1-2mieuTWNwW5XCKuyCPTrJqQ5V1w=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-environment-jsdom/-/jest-environment-jsdom-23.1.0.tgz",
+					"integrity": "sha1-hZKZFOI77TV32sl1X0EG0Gl8R5w=",
 					"dev": true,
 					"requires": {
-						"jest-mock": "^23.0.1",
-						"jest-util": "^23.0.1",
+						"jest-mock": "^23.1.0",
+						"jest-util": "^23.1.0",
 						"jsdom": "^11.5.1"
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 				"jest-environment-node": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-environment-node/-/jest-environment-node-23.0.1.tgz",
-					"integrity": "sha1-Z2t0DiBfHyvnckGWnngSvoJO55U=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-environment-node/-/jest-environment-node-23.1.0.tgz",
+					"integrity": "sha1-RSwL+UnPy7rNoeF2Lu7XC8eEx9U=",
 					"dev": true,
 					"requires": {
-						"jest-mock": "^23.0.1",
-						"jest-util": "^23.0.1"
+						"jest-mock": "^23.1.0",
+						"jest-util": "^23.1.0"
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 				"jest-jasmine2": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-jasmine2/-/jest-jasmine2-23.0.1.tgz",
-					"integrity": "sha1-Fth1NW5jYIcrukhCb30x/cGwvOo=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-jasmine2/-/jest-jasmine2-23.1.0.tgz",
+					"integrity": "sha1-SvqzFym2VN3NKwdK3YSTlvE7MLg=",
 					"dev": true,
 					"requires": {
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 						"co": "^4.6.0",
-						"expect": "^23.0.1",
+						"expect": "^23.1.0",
 						"is-generator-fn": "^1.0.0",
 						"jest-diff": "^23.0.1",
-						"jest-each": "^23.0.1",
+						"jest-each": "^23.1.0",
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-						"jest-message-util": "^23.0.0",
+						"jest-message-util": "^23.1.0",
 						"jest-snapshot": "^23.0.1",
-						"jest-util": "^23.0.1",
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@@ -3219,9 +3200,9 @@
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-					"resolved": "https://registry.npmjs.org/jest-message-util/-/jest-message-util-23.0.0.tgz",
-					"integrity": "sha1-Bz89dscB98cYpLmvHrfxOHksR5Y=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-message-util/-/jest-message-util-23.1.0.tgz",
+					"integrity": "sha1-moCbpIfsrFzlEdTmmO47XuJGHqk=",
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 					"requires": {
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@@ -3232,9 +3213,9 @@
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-					"resolved": "https://registry.npmjs.org/jest-mock/-/jest-mock-23.0.1.tgz",
-					"integrity": "sha1-FWn0d5aMZo/HKCc6F8N2d3O0Y1c=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-mock/-/jest-mock-23.1.0.tgz",
+					"integrity": "sha1-o4HDGxIasfYMRiotrbe4bczKxIc=",
 					"dev": true
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 				"jest-regex-util": {
@@ -3244,9 +3225,9 @@
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-					"resolved": "https://registry.npmjs.org/jest-resolve/-/jest-resolve-23.0.1.tgz",
-					"integrity": "sha1-P4QDRisQo0wt8dR6q1V0xJNbzSQ=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-resolve/-/jest-resolve-23.1.0.tgz",
+					"integrity": "sha1-ueMW7s69bwC8UKOWDRUnuuZXktI=",
 					"dev": true,
 					"requires": {
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@@ -3269,17 +3250,18 @@
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-					"resolved": "https://registry.npmjs.org/jest-util/-/jest-util-23.0.1.tgz",
-					"integrity": "sha1-aOpb1+2xd9MFn5eXJZ+ODazOL5k=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-util/-/jest-util-23.1.0.tgz",
+					"integrity": "sha1-wCUbrzRkTG3S/qeKli9CY6xVdy0=",
 					"dev": true,
 					"requires": {
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 						"chalk": "^2.0.1",
 						"graceful-fs": "^4.1.11",
 						"is-ci": "^1.0.10",
-						"jest-message-util": "^23.0.0",
+						"jest-message-util": "^23.1.0",
 						"mkdirp": "^0.5.1",
+						"slash": "^1.0.0",
 						"source-map": "^0.6.0"
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@@ -3387,9 +3369,9 @@
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-			"resolved": "https://registry.npmjs.org/jest-each/-/jest-each-23.0.1.tgz",
-			"integrity": "sha1-puXb9TCvxr+ddHkt3mnY23D4RwY=",
+			"version": "23.1.0",
+			"resolved": "https://registry.npmjs.org/jest-each/-/jest-each-23.1.0.tgz",
+			"integrity": "sha1-FhRrWSw1SGelrl4TzfFcbGW2lsY=",
 			"dev": true,
 			"requires": {
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@@ -3442,9 +3424,9 @@
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-			"resolved": "https://registry.npmjs.org/jest-haste-map/-/jest-haste-map-23.0.1.tgz",
-			"integrity": "sha1-zYkFKr/Iy6AfVgu+wJ1PNq7CXU8=",
+			"version": "23.1.0",
+			"resolved": "https://registry.npmjs.org/jest-haste-map/-/jest-haste-map-23.1.0.tgz",
+			"integrity": "sha1-GObH1ajScTb5G32YUvhd4McHTEk=",
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 			"requires": {
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@@ -3644,21 +3626,21 @@
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-			"integrity": "sha1-sXauPs+eGUqkuEp/z3DRuNsjGqc=",
+			"version": "23.1.0",
+			"resolved": "https://registry.npmjs.org/jest-runner/-/jest-runner-23.1.0.tgz",
+			"integrity": "sha1-+iCpM//3MaVDKzVh5/ZCZZT6KbU=",
 			"dev": true,
 			"requires": {
 				"exit": "^0.1.2",
 				"graceful-fs": "^4.1.11",
-				"jest-config": "^23.0.1",
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 				"jest-docblock": "^23.0.1",
-				"jest-haste-map": "^23.0.1",
-				"jest-jasmine2": "^23.0.1",
+				"jest-haste-map": "^23.1.0",
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 				"jest-leak-detector": "^23.0.1",
-				"jest-message-util": "^23.0.0",
-				"jest-runtime": "^23.0.1",
-				"jest-util": "^23.0.1",
+				"jest-message-util": "^23.1.0",
+				"jest-runtime": "^23.1.0",
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@@ -3671,36 +3653,36 @@
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-					"resolved": "https://registry.npmjs.org/expect/-/expect-23.0.1.tgz",
-					"integrity": "sha1-mRMfL9kRVZX4zDaXQB5/BzTUX+8=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/expect/-/expect-23.1.0.tgz",
+					"integrity": "sha1-v9/VeiogFw2HWZnul4fMcfAcIF8=",
 					"dev": true,
 					"requires": {
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 						"jest-diff": "^23.0.1",
 						"jest-get-type": "^22.1.0",
 						"jest-matcher-utils": "^23.0.1",
-						"jest-message-util": "^23.0.0",
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 						"jest-regex-util": "^23.0.0"
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 				"jest-config": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-config/-/jest-config-23.0.1.tgz",
-					"integrity": "sha1-Z5i/8SR8ejkLEycZMwUAFYL8WPo=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-config/-/jest-config-23.1.0.tgz",
+					"integrity": "sha1-cIyg9DHTVu5CT7SJXTMIAGvdgkE=",
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 					"requires": {
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 						"glob": "^7.1.1",
-						"jest-environment-jsdom": "^23.0.1",
-						"jest-environment-node": "^23.0.1",
+						"jest-environment-jsdom": "^23.1.0",
+						"jest-environment-node": "^23.1.0",
 						"jest-get-type": "^22.1.0",
-						"jest-jasmine2": "^23.0.1",
+						"jest-jasmine2": "^23.1.0",
 						"jest-regex-util": "^23.0.0",
-						"jest-resolve": "^23.0.1",
-						"jest-util": "^23.0.1",
+						"jest-resolve": "^23.1.0",
+						"jest-util": "^23.1.0",
 						"jest-validate": "^23.0.1",
 						"pretty-format": "^23.0.1"
 					}
@@ -3718,42 +3700,42 @@
 					}
 				},
 				"jest-environment-jsdom": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-environment-jsdom/-/jest-environment-jsdom-23.0.1.tgz",
-					"integrity": "sha1-2mieuTWNwW5XCKuyCPTrJqQ5V1w=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-environment-jsdom/-/jest-environment-jsdom-23.1.0.tgz",
+					"integrity": "sha1-hZKZFOI77TV32sl1X0EG0Gl8R5w=",
 					"dev": true,
 					"requires": {
-						"jest-mock": "^23.0.1",
-						"jest-util": "^23.0.1",
+						"jest-mock": "^23.1.0",
+						"jest-util": "^23.1.0",
 						"jsdom": "^11.5.1"
 					}
 				},
 				"jest-environment-node": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-environment-node/-/jest-environment-node-23.0.1.tgz",
-					"integrity": "sha1-Z2t0DiBfHyvnckGWnngSvoJO55U=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-environment-node/-/jest-environment-node-23.1.0.tgz",
+					"integrity": "sha1-RSwL+UnPy7rNoeF2Lu7XC8eEx9U=",
 					"dev": true,
 					"requires": {
-						"jest-mock": "^23.0.1",
-						"jest-util": "^23.0.1"
+						"jest-mock": "^23.1.0",
+						"jest-util": "^23.1.0"
 					}
 				},
 				"jest-jasmine2": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-jasmine2/-/jest-jasmine2-23.0.1.tgz",
-					"integrity": "sha1-Fth1NW5jYIcrukhCb30x/cGwvOo=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-jasmine2/-/jest-jasmine2-23.1.0.tgz",
+					"integrity": "sha1-SvqzFym2VN3NKwdK3YSTlvE7MLg=",
 					"dev": true,
 					"requires": {
 						"chalk": "^2.0.1",
 						"co": "^4.6.0",
-						"expect": "^23.0.1",
+						"expect": "^23.1.0",
 						"is-generator-fn": "^1.0.0",
 						"jest-diff": "^23.0.1",
-						"jest-each": "^23.0.1",
+						"jest-each": "^23.1.0",
 						"jest-matcher-utils": "^23.0.1",
-						"jest-message-util": "^23.0.0",
+						"jest-message-util": "^23.1.0",
 						"jest-snapshot": "^23.0.1",
-						"jest-util": "^23.0.1",
+						"jest-util": "^23.1.0",
 						"pretty-format": "^23.0.1"
 					}
 				},
@@ -3769,9 +3751,9 @@
 					}
 				},
 				"jest-message-util": {
-					"version": "23.0.0",
-					"resolved": "https://registry.npmjs.org/jest-message-util/-/jest-message-util-23.0.0.tgz",
-					"integrity": "sha1-Bz89dscB98cYpLmvHrfxOHksR5Y=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-message-util/-/jest-message-util-23.1.0.tgz",
+					"integrity": "sha1-moCbpIfsrFzlEdTmmO47XuJGHqk=",
 					"dev": true,
 					"requires": {
 						"@babel/code-frame": "^7.0.0-beta.35",
@@ -3782,9 +3764,9 @@
 					}
 				},
 				"jest-mock": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-mock/-/jest-mock-23.0.1.tgz",
-					"integrity": "sha1-FWn0d5aMZo/HKCc6F8N2d3O0Y1c=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-mock/-/jest-mock-23.1.0.tgz",
+					"integrity": "sha1-o4HDGxIasfYMRiotrbe4bczKxIc=",
 					"dev": true
 				},
 				"jest-regex-util": {
@@ -3794,9 +3776,9 @@
 					"dev": true
 				},
 				"jest-resolve": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-resolve/-/jest-resolve-23.0.1.tgz",
-					"integrity": "sha1-P4QDRisQo0wt8dR6q1V0xJNbzSQ=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-resolve/-/jest-resolve-23.1.0.tgz",
+					"integrity": "sha1-ueMW7s69bwC8UKOWDRUnuuZXktI=",
 					"dev": true,
 					"requires": {
 						"browser-resolve": "^1.11.2",
@@ -3819,17 +3801,18 @@
 					}
 				},
 				"jest-util": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-util/-/jest-util-23.0.1.tgz",
-					"integrity": "sha1-aOpb1+2xd9MFn5eXJZ+ODazOL5k=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-util/-/jest-util-23.1.0.tgz",
+					"integrity": "sha1-wCUbrzRkTG3S/qeKli9CY6xVdy0=",
 					"dev": true,
 					"requires": {
 						"callsites": "^2.0.0",
 						"chalk": "^2.0.1",
 						"graceful-fs": "^4.1.11",
 						"is-ci": "^1.0.10",
-						"jest-message-util": "^23.0.0",
+						"jest-message-util": "^23.1.0",
 						"mkdirp": "^0.5.1",
+						"slash": "^1.0.0",
 						"source-map": "^0.6.0"
 					}
 				},
@@ -3874,9 +3857,9 @@
 			}
 		},
 		"jest-runtime": {
-			"version": "23.0.1",
-			"resolved": "https://registry.npmjs.org/jest-runtime/-/jest-runtime-23.0.1.tgz",
-			"integrity": "sha1-sddl+wP7bUBDgFrycGdqaT9QTVc=",
+			"version": "23.1.0",
+			"resolved": "https://registry.npmjs.org/jest-runtime/-/jest-runtime-23.1.0.tgz",
+			"integrity": "sha1-tK4OhyWeys/UqIS2OdsHz03WIK8=",
 			"dev": true,
 			"requires": {
 				"babel-core": "^6.0.0",
@@ -3886,13 +3869,13 @@
 				"exit": "^0.1.2",
 				"fast-json-stable-stringify": "^2.0.0",
 				"graceful-fs": "^4.1.11",
-				"jest-config": "^23.0.1",
-				"jest-haste-map": "^23.0.1",
-				"jest-message-util": "^23.0.0",
+				"jest-config": "^23.1.0",
+				"jest-haste-map": "^23.1.0",
+				"jest-message-util": "^23.1.0",
 				"jest-regex-util": "^23.0.0",
-				"jest-resolve": "^23.0.1",
+				"jest-resolve": "^23.1.0",
 				"jest-snapshot": "^23.0.1",
-				"jest-util": "^23.0.1",
+				"jest-util": "^23.1.0",
 				"jest-validate": "^23.0.1",
 				"micromatch": "^2.3.11",
 				"realpath-native": "^1.0.0",
@@ -3909,36 +3892,36 @@
 					"dev": true
 				},
 				"expect": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/expect/-/expect-23.0.1.tgz",
-					"integrity": "sha1-mRMfL9kRVZX4zDaXQB5/BzTUX+8=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/expect/-/expect-23.1.0.tgz",
+					"integrity": "sha1-v9/VeiogFw2HWZnul4fMcfAcIF8=",
 					"dev": true,
 					"requires": {
 						"ansi-styles": "^3.2.0",
 						"jest-diff": "^23.0.1",
 						"jest-get-type": "^22.1.0",
 						"jest-matcher-utils": "^23.0.1",
-						"jest-message-util": "^23.0.0",
+						"jest-message-util": "^23.1.0",
 						"jest-regex-util": "^23.0.0"
 					}
 				},
 				"jest-config": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-config/-/jest-config-23.0.1.tgz",
-					"integrity": "sha1-Z5i/8SR8ejkLEycZMwUAFYL8WPo=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-config/-/jest-config-23.1.0.tgz",
+					"integrity": "sha1-cIyg9DHTVu5CT7SJXTMIAGvdgkE=",
 					"dev": true,
 					"requires": {
 						"babel-core": "^6.0.0",
 						"babel-jest": "^23.0.1",
 						"chalk": "^2.0.1",
 						"glob": "^7.1.1",
-						"jest-environment-jsdom": "^23.0.1",
-						"jest-environment-node": "^23.0.1",
+						"jest-environment-jsdom": "^23.1.0",
+						"jest-environment-node": "^23.1.0",
 						"jest-get-type": "^22.1.0",
-						"jest-jasmine2": "^23.0.1",
+						"jest-jasmine2": "^23.1.0",
 						"jest-regex-util": "^23.0.0",
-						"jest-resolve": "^23.0.1",
-						"jest-util": "^23.0.1",
+						"jest-resolve": "^23.1.0",
+						"jest-util": "^23.1.0",
 						"jest-validate": "^23.0.1",
 						"pretty-format": "^23.0.1"
 					}
@@ -3956,42 +3939,42 @@
 					}
 				},
 				"jest-environment-jsdom": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-environment-jsdom/-/jest-environment-jsdom-23.0.1.tgz",
-					"integrity": "sha1-2mieuTWNwW5XCKuyCPTrJqQ5V1w=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-environment-jsdom/-/jest-environment-jsdom-23.1.0.tgz",
+					"integrity": "sha1-hZKZFOI77TV32sl1X0EG0Gl8R5w=",
 					"dev": true,
 					"requires": {
-						"jest-mock": "^23.0.1",
-						"jest-util": "^23.0.1",
+						"jest-mock": "^23.1.0",
+						"jest-util": "^23.1.0",
 						"jsdom": "^11.5.1"
 					}
 				},
 				"jest-environment-node": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-environment-node/-/jest-environment-node-23.0.1.tgz",
-					"integrity": "sha1-Z2t0DiBfHyvnckGWnngSvoJO55U=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-environment-node/-/jest-environment-node-23.1.0.tgz",
+					"integrity": "sha1-RSwL+UnPy7rNoeF2Lu7XC8eEx9U=",
 					"dev": true,
 					"requires": {
-						"jest-mock": "^23.0.1",
-						"jest-util": "^23.0.1"
+						"jest-mock": "^23.1.0",
+						"jest-util": "^23.1.0"
 					}
 				},
 				"jest-jasmine2": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-jasmine2/-/jest-jasmine2-23.0.1.tgz",
-					"integrity": "sha1-Fth1NW5jYIcrukhCb30x/cGwvOo=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-jasmine2/-/jest-jasmine2-23.1.0.tgz",
+					"integrity": "sha1-SvqzFym2VN3NKwdK3YSTlvE7MLg=",
 					"dev": true,
 					"requires": {
 						"chalk": "^2.0.1",
 						"co": "^4.6.0",
-						"expect": "^23.0.1",
+						"expect": "^23.1.0",
 						"is-generator-fn": "^1.0.0",
 						"jest-diff": "^23.0.1",
-						"jest-each": "^23.0.1",
+						"jest-each": "^23.1.0",
 						"jest-matcher-utils": "^23.0.1",
-						"jest-message-util": "^23.0.0",
+						"jest-message-util": "^23.1.0",
 						"jest-snapshot": "^23.0.1",
-						"jest-util": "^23.0.1",
+						"jest-util": "^23.1.0",
 						"pretty-format": "^23.0.1"
 					}
 				},
@@ -4007,9 +3990,9 @@
 					}
 				},
 				"jest-message-util": {
-					"version": "23.0.0",
-					"resolved": "https://registry.npmjs.org/jest-message-util/-/jest-message-util-23.0.0.tgz",
-					"integrity": "sha1-Bz89dscB98cYpLmvHrfxOHksR5Y=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-message-util/-/jest-message-util-23.1.0.tgz",
+					"integrity": "sha1-moCbpIfsrFzlEdTmmO47XuJGHqk=",
 					"dev": true,
 					"requires": {
 						"@babel/code-frame": "^7.0.0-beta.35",
@@ -4020,9 +4003,9 @@
 					}
 				},
 				"jest-mock": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-mock/-/jest-mock-23.0.1.tgz",
-					"integrity": "sha1-FWn0d5aMZo/HKCc6F8N2d3O0Y1c=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-mock/-/jest-mock-23.1.0.tgz",
+					"integrity": "sha1-o4HDGxIasfYMRiotrbe4bczKxIc=",
 					"dev": true
 				},
 				"jest-regex-util": {
@@ -4032,9 +4015,9 @@
 					"dev": true
 				},
 				"jest-resolve": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-resolve/-/jest-resolve-23.0.1.tgz",
-					"integrity": "sha1-P4QDRisQo0wt8dR6q1V0xJNbzSQ=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-resolve/-/jest-resolve-23.1.0.tgz",
+					"integrity": "sha1-ueMW7s69bwC8UKOWDRUnuuZXktI=",
 					"dev": true,
 					"requires": {
 						"browser-resolve": "^1.11.2",
@@ -4057,17 +4040,18 @@
 					}
 				},
 				"jest-util": {
-					"version": "23.0.1",
-					"resolved": "https://registry.npmjs.org/jest-util/-/jest-util-23.0.1.tgz",
-					"integrity": "sha1-aOpb1+2xd9MFn5eXJZ+ODazOL5k=",
+					"version": "23.1.0",
+					"resolved": "https://registry.npmjs.org/jest-util/-/jest-util-23.1.0.tgz",
+					"integrity": "sha1-wCUbrzRkTG3S/qeKli9CY6xVdy0=",
 					"dev": true,
 					"requires": {
 						"callsites": "^2.0.0",
 						"chalk": "^2.0.1",
 						"graceful-fs": "^4.1.11",
 						"is-ci": "^1.0.10",
-						"jest-message-util": "^23.0.0",
+						"jest-message-util": "^23.1.0",
 						"mkdirp": "^0.5.1",
+						"slash": "^1.0.0",
 						"source-map": "^0.6.0"
 					}
 				},
@@ -4181,6 +4165,17 @@
 				"pretty-format": "^22.4.0"
 			}
 		},
+		"jest-watcher": {
+			"version": "23.1.0",
+			"resolved": "https://registry.npmjs.org/jest-watcher/-/jest-watcher-23.1.0.tgz",
+			"integrity": "sha1-qNWELjjZ+0r/+CPfartCpYrmzb0=",
+			"dev": true,
+			"requires": {
+				"ansi-escapes": "^3.0.0",
+				"chalk": "^2.0.1",
+				"string-length": "^2.0.0"
+			}
+		},
 		"jest-worker": {
 			"version": "23.0.1",
 			"resolved": "https://registry.npmjs.org/jest-worker/-/jest-worker-23.0.1.tgz",
@@ -4989,8 +4984,7 @@
 			"version": "1.0.1",
 			"resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
 			"integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-			"dev": true,
-			"optional": true
+			"dev": true
 		},
 		"loose-envify": {
 			"version": "1.3.1",
diff --git a/package.json b/package.json
index 15f958e..f619015 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
 	"devDependencies": {
 		"coveralls": "3.0.1",
 		"husky": "0.14.3",
-		"jest": "23.0.1",
+		"jest": "23.1.0",
 		"lint-staged": "7.1.2",
 		"nyc": "11.8.0",
 		"prettier": "1.13.2"
diff --git a/yarn.lock b/yarn.lock
index 4f057b5..600b412 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -960,15 +960,15 @@ expect@^22.4.3:
     jest-message-util "^22.4.3"
     jest-regex-util "^22.4.3"
 
-expect@^23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/expect/-/expect-23.0.1.tgz#99131f2fd9115595f8cc3697401e7f0734d45fef"
+expect@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/expect/-/expect-23.1.0.tgz#bfdfd57a2a20170d875999ee9787cc71f01c205f"
   dependencies:
     ansi-styles "^3.2.0"
     jest-diff "^23.0.1"
     jest-get-type "^22.1.0"
     jest-matcher-utils "^23.0.1"
-    jest-message-util "^23.0.0"
+    jest-message-util "^23.1.0"
     jest-regex-util "^23.0.0"
 
 extend-shallow@^2.0.1:
@@ -1780,9 +1780,9 @@ jest-changed-files@^23.0.1:
   dependencies:
     throat "^4.0.0"
 
-jest-cli@^23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/jest-cli/-/jest-cli-23.0.1.tgz#351a5ba51cf28ecf20336d97a30b970d1f530a56"
+jest-cli@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-cli/-/jest-cli-23.1.0.tgz#eb8bdd4ce0d15250892e31ad9b69bc99d2a8f6bf"
   dependencies:
     ansi-escapes "^3.0.0"
     chalk "^2.0.1"
@@ -1796,18 +1796,19 @@ jest-cli@^23.0.1:
     istanbul-lib-instrument "^1.10.1"
     istanbul-lib-source-maps "^1.2.4"
     jest-changed-files "^23.0.1"
-    jest-config "^23.0.1"
-    jest-environment-jsdom "^23.0.1"
+    jest-config "^23.1.0"
+    jest-environment-jsdom "^23.1.0"
     jest-get-type "^22.1.0"
-    jest-haste-map "^23.0.1"
-    jest-message-util "^23.0.0"
+    jest-haste-map "^23.1.0"
+    jest-message-util "^23.1.0"
     jest-regex-util "^23.0.0"
     jest-resolve-dependencies "^23.0.1"
-    jest-runner "^23.0.1"
-    jest-runtime "^23.0.1"
+    jest-runner "^23.1.0"
+    jest-runtime "^23.1.0"
     jest-snapshot "^23.0.1"
-    jest-util "^23.0.1"
+    jest-util "^23.1.0"
     jest-validate "^23.0.1"
+    jest-watcher "^23.1.0"
     jest-worker "^23.0.1"
     micromatch "^2.3.11"
     node-notifier "^5.2.1"
@@ -1835,21 +1836,21 @@ jest-config@^22.4.3:
     jest-validate "^22.4.3"
     pretty-format "^22.4.3"
 
-jest-config@^23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/jest-config/-/jest-config-23.0.1.tgz#6798bff1247c7a390b1327193305001582fc58fa"
+jest-config@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-config/-/jest-config-23.1.0.tgz#708ca0f431d356ee424fb4895d3308006bdd8241"
   dependencies:
     babel-core "^6.0.0"
     babel-jest "^23.0.1"
     chalk "^2.0.1"
     glob "^7.1.1"
-    jest-environment-jsdom "^23.0.1"
-    jest-environment-node "^23.0.1"
+    jest-environment-jsdom "^23.1.0"
+    jest-environment-node "^23.1.0"
     jest-get-type "^22.1.0"
-    jest-jasmine2 "^23.0.1"
+    jest-jasmine2 "^23.1.0"
     jest-regex-util "^23.0.0"
-    jest-resolve "^23.0.1"
-    jest-util "^23.0.1"
+    jest-resolve "^23.1.0"
+    jest-util "^23.1.0"
     jest-validate "^23.0.1"
     pretty-format "^23.0.1"
 
@@ -1877,9 +1878,9 @@ jest-docblock@^23.0.1:
   dependencies:
     detect-newline "^2.1.0"
 
-jest-each@^23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/jest-each/-/jest-each-23.0.1.tgz#a6e5dbf530afc6bf9d74792dde69d8db70f84706"
+jest-each@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-each/-/jest-each-23.1.0.tgz#16146b592c354867a5ae5e13cdf15c6c65b696c6"
   dependencies:
     chalk "^2.0.1"
     pretty-format "^23.0.1"
@@ -1892,12 +1893,12 @@ jest-environment-jsdom@^22.4.3:
     jest-util "^22.4.3"
     jsdom "^11.5.1"
 
-jest-environment-jsdom@^23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/jest-environment-jsdom/-/jest-environment-jsdom-23.0.1.tgz#da689eb9358dc16e5708abb208f4eb26a439575c"
+jest-environment-jsdom@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-environment-jsdom/-/jest-environment-jsdom-23.1.0.tgz#85929914e23bed3577dac9755f4106d0697c479c"
   dependencies:
-    jest-mock "^23.0.1"
-    jest-util "^23.0.1"
+    jest-mock "^23.1.0"
+    jest-util "^23.1.0"
     jsdom "^11.5.1"
 
 jest-environment-node@^22.4.3:
@@ -1907,20 +1908,20 @@ jest-environment-node@^22.4.3:
     jest-mock "^22.4.3"
     jest-util "^22.4.3"
 
-jest-environment-node@^23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/jest-environment-node/-/jest-environment-node-23.0.1.tgz#676b740e205f1f2be77241969e7812be824ee795"
+jest-environment-node@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-environment-node/-/jest-environment-node-23.1.0.tgz#452c0bf949cfcbbacda1e1762eeed70bc784c7d5"
   dependencies:
-    jest-mock "^23.0.1"
-    jest-util "^23.0.1"
+    jest-mock "^23.1.0"
+    jest-util "^23.1.0"
 
 jest-get-type@^22.1.0, jest-get-type@^22.4.3:
   version "22.4.3"
   resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-22.4.3.tgz#e3a8504d8479342dd4420236b322869f18900ce4"
 
-jest-haste-map@^23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-23.0.1.tgz#cd89052abfc8cba01f560bbec09d4f36aec25d4f"
+jest-haste-map@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-23.1.0.tgz#18e6c7d5a8d27136f91b7d9852f85de0c7074c49"
   dependencies:
     fb-watchman "^2.0.0"
     graceful-fs "^4.1.11"
@@ -1946,20 +1947,20 @@ jest-jasmine2@^22.4.3:
     jest-util "^22.4.3"
     source-map-support "^0.5.0"
 
-jest-jasmine2@^23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/jest-jasmine2/-/jest-jasmine2-23.0.1.tgz#16d875356e6360872bba48426f7d31fdc1b0bcea"
+jest-jasmine2@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-jasmine2/-/jest-jasmine2-23.1.0.tgz#4afab31729b654ddcd2b074add849396f13b30b8"
   dependencies:
     chalk "^2.0.1"
     co "^4.6.0"
-    expect "^23.0.1"
+    expect "^23.1.0"
     is-generator-fn "^1.0.0"
     jest-diff "^23.0.1"
-    jest-each "^23.0.1"
+    jest-each "^23.1.0"
     jest-matcher-utils "^23.0.1"
-    jest-message-util "^23.0.0"
+    jest-message-util "^23.1.0"
     jest-snapshot "^23.0.1"
-    jest-util "^23.0.1"
+    jest-util "^23.1.0"
     pretty-format "^23.0.1"
 
 jest-leak-detector@^23.0.1:
@@ -1994,9 +1995,9 @@ jest-message-util@^22.4.3:
     slash "^1.0.0"
     stack-utils "^1.0.1"
 
-jest-message-util@^23.0.0:
-  version "23.0.0"
-  resolved "https://registry.yarnpkg.com/jest-message-util/-/jest-message-util-23.0.0.tgz#073f3d76c701f7c718a4b9af1eb7f138792c4796"
+jest-message-util@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-message-util/-/jest-message-util-23.1.0.tgz#9a809ba487ecac5ce511d4e698ee3b5ee2461ea9"
   dependencies:
     "@babel/code-frame" "^7.0.0-beta.35"
     chalk "^2.0.1"
@@ -2008,9 +2009,9 @@ jest-mock@^22.4.3:
   version "22.4.3"
   resolved "https://registry.yarnpkg.com/jest-mock/-/jest-mock-22.4.3.tgz#f63ba2f07a1511772cdc7979733397df770aabc7"
 
-jest-mock@^23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/jest-mock/-/jest-mock-23.0.1.tgz#1569f477968c668fc728273a17c3767773b46357"
+jest-mock@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-mock/-/jest-mock-23.1.0.tgz#a381c31b121ab1f60c462a2dadb7b86dcccac487"
 
 jest-regex-util@^22.4.3:
   version "22.4.3"
@@ -2034,35 +2035,35 @@ jest-resolve@^22.4.3:
     browser-resolve "^1.11.2"
     chalk "^2.0.1"
 
-jest-resolve@^23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/jest-resolve/-/jest-resolve-23.0.1.tgz#3f8403462b10a34c2df1d47aab5574c4935bcd24"
+jest-resolve@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-resolve/-/jest-resolve-23.1.0.tgz#b9e316eecebd6f00bc50a3960d1527bae65792d2"
   dependencies:
     browser-resolve "^1.11.2"
     chalk "^2.0.1"
     realpath-native "^1.0.0"
 
-jest-runner@^23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/jest-runner/-/jest-runner-23.0.1.tgz#b176ae3ecf9e194aa4b84a7fcf70d1b8db231aa7"
+jest-runner@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-runner/-/jest-runner-23.1.0.tgz#fa20a933fff731a5432b3561e7f6426594fa29b5"
   dependencies:
     exit "^0.1.2"
     graceful-fs "^4.1.11"
-    jest-config "^23.0.1"
+    jest-config "^23.1.0"
     jest-docblock "^23.0.1"
-    jest-haste-map "^23.0.1"
-    jest-jasmine2 "^23.0.1"
+    jest-haste-map "^23.1.0"
+    jest-jasmine2 "^23.1.0"
     jest-leak-detector "^23.0.1"
-    jest-message-util "^23.0.0"
-    jest-runtime "^23.0.1"
-    jest-util "^23.0.1"
+    jest-message-util "^23.1.0"
+    jest-runtime "^23.1.0"
+    jest-util "^23.1.0"
     jest-worker "^23.0.1"
     source-map-support "^0.5.6"
     throat "^4.0.0"
 
-jest-runtime@^23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/jest-runtime/-/jest-runtime-23.0.1.tgz#b1d765fb03fb6d4043805af270676a693f504d57"
+jest-runtime@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-runtime/-/jest-runtime-23.1.0.tgz#b4ae0e87259ecacfd4a884b639db07cf4dd620af"
   dependencies:
     babel-core "^6.0.0"
     babel-plugin-istanbul "^4.1.6"
@@ -2071,13 +2072,13 @@ jest-runtime@^23.0.1:
     exit "^0.1.2"
     fast-json-stable-stringify "^2.0.0"
     graceful-fs "^4.1.11"
-    jest-config "^23.0.1"
-    jest-haste-map "^23.0.1"
-    jest-message-util "^23.0.0"
+    jest-config "^23.1.0"
+    jest-haste-map "^23.1.0"
+    jest-message-util "^23.1.0"
     jest-regex-util "^23.0.0"
-    jest-resolve "^23.0.1"
+    jest-resolve "^23.1.0"
     jest-snapshot "^23.0.1"
-    jest-util "^23.0.1"
+    jest-util "^23.1.0"
     jest-validate "^23.0.1"
     micromatch "^2.3.11"
     realpath-native "^1.0.0"
@@ -2124,16 +2125,17 @@ jest-util@^22.4.3:
     mkdirp "^0.5.1"
     source-map "^0.6.0"
 
-jest-util@^23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-23.0.1.tgz#68ea5bd7edb177d3059f9797259f8e0dacce2f99"
+jest-util@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-23.1.0.tgz#c0251baf34644c6dd2fea78a962f4263ac55772d"
   dependencies:
     callsites "^2.0.0"
     chalk "^2.0.1"
     graceful-fs "^4.1.11"
     is-ci "^1.0.10"
-    jest-message-util "^23.0.0"
+    jest-message-util "^23.1.0"
     mkdirp "^0.5.1"
+    slash "^1.0.0"
     source-map "^0.6.0"
 
 jest-validate@^22.4.0, jest-validate@^22.4.3:
@@ -2155,18 +2157,26 @@ jest-validate@^23.0.1:
     leven "^2.1.0"
     pretty-format "^23.0.1"
 
+jest-watcher@^23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest-watcher/-/jest-watcher-23.1.0.tgz#a8d5842e38d9fb4afff823df6abb42a58ae6cdbd"
+  dependencies:
+    ansi-escapes "^3.0.0"
+    chalk "^2.0.1"
+    string-length "^2.0.0"
+
 jest-worker@^23.0.1:
   version "23.0.1"
   resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-23.0.1.tgz#9e649dd963ff4046026f91c4017f039a6aa4a7bc"
   dependencies:
     merge-stream "^1.0.1"
 
-jest@23.0.1:
-  version "23.0.1"
-  resolved "https://registry.yarnpkg.com/jest/-/jest-23.0.1.tgz#0d083290ee4112cecfb780df6ff81332ed373201"
+jest@23.1.0:
+  version "23.1.0"
+  resolved "https://registry.yarnpkg.com/jest/-/jest-23.1.0.tgz#bbb7f893100a11a742dd8bd0d047a54b0968ad1a"
   dependencies:
     import-local "^1.0.0"
-    jest-cli "^23.0.1"
+    jest-cli "^23.1.0"
 
 js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"