diff --git a/package-lock.json b/package-lock.json
index 65de5a6b6..def7b3322 100644
--- a/package-lock.json
+++ b/package-lock.json
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 			"integrity": "sha1-odl8yvy8JiXMcPrc6zalDFiwGlM=",
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 					"integrity": "sha1-XIgDbPVl5d8FVYv8kR+GVt8hiIQ=",
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-			"requires": {
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 					"integrity": "sha1-AARWmzfHx0ujnEPzzteNGtlBQL4=",
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 			"integrity": "sha1-dkpaEa9QVhkhsTPztE5hhofg9cM=",
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+			"dev": true,
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@@ -5700,7 +6384,8 @@
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 			"integrity": "sha1-lYYL/MXHbCd/j4Mm/Q9bLiDrohc=",
-			"dev": true
+			"dev": true,
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 			"integrity": "sha1-HN+kcqnvUMI57maZm2YsoOs5k38=",
 			"dev": true,
+			"optional": true,
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+		"to-regex-range": {
+			"version": "5.0.1",
+			"resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
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+			"dev": true,
+			"requires": {
+				"is-number": "^7.0.0"
+			},
+			"dependencies": {
+				"is-number": {
+					"version": "7.0.0",
+					"resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
+					"integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
+					"dev": true
+				}
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+		},
 		"tough-cookie": {
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@@ -5735,13 +6438,15 @@
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 			"integrity": "sha1-WIeWa7WCpFA6QetST301ARgVphM=",
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+			"dev": true,
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 		"trim-repeated": {
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 			"resolved": "https://registry.npmjs.org/trim-repeated/-/trim-repeated-1.0.0.tgz",
 			"integrity": "sha1-42RqLqTokTEr9+rObPsFOAvAHCE=",
 			"dev": true,
+			"optional": true,
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 			}
@@ -5786,14 +6491,28 @@
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 			"optional": true
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+		"unc-path-regex": {
+			"version": "0.1.2",
+			"resolved": "https://registry.npmjs.org/unc-path-regex/-/unc-path-regex-0.1.2.tgz",
+			"integrity": "sha1-5z3T17DXxe2G+6xrCufYxqadUPo=",
+			"dev": true
+		},
 		"underscore.string": {
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-			"resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-3.3.5.tgz",
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+			"version": "3.3.6",
+			"resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-3.3.6.tgz",
+			"integrity": "sha512-VoC83HWXmCrF6rgkyxS9GHv8W9Q5nhMKho+OadDJGzL2oDYbYEppBaCMH6pFlwLeqj2QS+hhkw2kpXkSdD1JxQ==",
 			"dev": true,
 			"requires": {
-				"sprintf-js": "^1.0.3",
+				"sprintf-js": "^1.1.1",
 				"util-deprecate": "^1.0.2"
+			},
+			"dependencies": {
+				"sprintf-js": {
+					"version": "1.1.2",
+					"resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.1.2.tgz",
+					"integrity": "sha512-VE0SOVEHCk7Qc8ulkWw3ntAzXuqf7S2lvwQaDLRnUeIEaKNQJzV6BwmLKhOqT61aGhfUMrXeaBk+oDGCzvhcug==",
+					"dev": true
+				}
 			}
 		},
 		"unique-stream": {
@@ -5801,6 +6520,7 @@
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 			"integrity": "sha1-WqADz76Uxf+GbE59ZouxxNuts2k=",
 			"dev": true,
+			"optional": true,
 			"requires": {
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@@ -5810,7 +6530,8 @@
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 			"integrity": "sha1-uYTwh3/AqJwsdzzB73tbIytbBv4=",
-			"dev": true
+			"dev": true,
+			"optional": true
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 		"upper-case": {
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@@ -5832,6 +6553,7 @@
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 			"integrity": "sha1-evjzA2Rem9eaJy56FKxovAYJ2nM=",
 			"dev": true,
+			"optional": true,
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 			}
@@ -5886,17 +6608,28 @@
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 			"dev": true
 		},
+		"v8flags": {
+			"version": "3.2.0",
+			"resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.2.0.tgz",
+			"integrity": "sha512-mH8etigqMfiGWdeXpaaqGfs6BndypxusHHcv2qSHyZkGEznCd/qAXCWWRzeowtL54147cktFOC4P5y+kl8d8Jg==",
+			"dev": true,
+			"requires": {
+				"homedir-polyfill": "^1.0.1"
+			}
+		},
 		"vali-date": {
 			"version": "1.0.0",
 			"resolved": "https://registry.npmjs.org/vali-date/-/vali-date-1.0.0.tgz",
 			"integrity": "sha1-G5BKWWCfsyjvB4E4Qgk09rhnCaY=",
-			"dev": true
+			"dev": true,
+			"optional": true
 		},
 		"validate-npm-package-license": {
 			"version": "3.0.1",
 			"resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.1.tgz",
 			"integrity": "sha1-KAS6vnEq0zeUWaz74kdGqywwP7w=",
 			"dev": true,
+			"optional": true,
 			"requires": {
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@@ -5926,6 +6659,7 @@
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 			"integrity": "sha1-LzVsh6VQolVGHza76ypbqL94SEc=",
 			"dev": true,
+			"optional": true,
 			"requires": {
 				"clone": "^0.2.0",
 				"clone-stats": "^0.0.1"
@@ -5935,7 +6669,8 @@
 					"version": "0.2.0",
 					"resolved": "https://registry.npmjs.org/clone/-/clone-0.2.0.tgz",
 					"integrity": "sha1-xhJqkK1Pctv1rNskPMN3JP6T/B8=",
-					"dev": true
+					"dev": true,
+					"optional": true
 				}
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 		},
@@ -5944,6 +6679,7 @@
 			"resolved": "https://registry.npmjs.org/vinyl-assign/-/vinyl-assign-1.2.1.tgz",
 			"integrity": "sha1-TRmIkbVRWRHXcajNnFSApGoHSkU=",
 			"dev": true,
+			"optional": true,
 			"requires": {
 				"object-assign": "^4.0.1",
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@@ -6009,6 +6745,7 @@
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 					"integrity": "sha1-jQh8OcazjAAbl/ynzm0OHoCvusc=",
 					"dev": true,
+					"optional": true,
 					"requires": {
 						"brace-expansion": "^1.0.0"
 					}
@@ -6045,6 +6782,7 @@
 			"resolved": "https://registry.npmjs.org/ware/-/ware-1.3.0.tgz",
 			"integrity": "sha1-0bFPOdLiy0q4xAmPdW/ksWTkc9Q=",
 			"dev": true,
+			"optional": true,
 			"requires": {
 				"wrap-fn": "^0.1.0"
 			}
@@ -6132,6 +6870,7 @@
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 			"integrity": "sha1-8htuQQFv9KfjFyDbxjoJAWvfmEU=",
 			"dev": true,
+			"optional": true,
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 			},
@@ -6140,7 +6879,8 @@
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 					"integrity": "sha1-TqVOpaCJOBUxheFSEMaNkJK8G3g=",
-					"dev": true
+					"dev": true,
+					"optional": true
 				}
 			}
 		},
diff --git a/package.json b/package.json
index be27931ee..36d731176 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
 	"devDependencies": {
 		"chalk": "^2.4.2",
 		"du": "^0.1.0",
-		"grunt": "^1.0.4",
+		"grunt": "^1.5.3",
 		"grunt-contrib-clean": "^2.0.0",
 		"grunt-contrib-concat": "^1.0.1",
 		"grunt-contrib-copy": "^1.0.0",