diff --git a/package-lock.json b/package-lock.json
index 40ac489..3bfffa7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,23 +23,34 @@
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@@ -51,6 +62,11 @@
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@@ -69,6 +85,24 @@
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@@ -236,6 +270,21 @@
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@@ -248,15 +297,21 @@
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@@ -271,6 +326,21 @@
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@@ -289,6 +359,15 @@
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@@ -327,6 +406,40 @@
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@@ -396,6 +509,12 @@
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@@ -407,9 +526,9 @@
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@@ -437,50 +556,153 @@
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@@ -538,78 +760,92 @@
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@@ -796,11 +1352,27 @@
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+      "resolved": "https://registry.npmjs.org/resolve-dir/-/resolve-dir-1.0.1.tgz",
+      "integrity": "sha1-eaQGRMNivoLybv/nOcm7U4IEb0M=",
+      "dev": true,
+      "requires": {
+        "expand-tilde": "^2.0.0",
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       "integrity": "sha1-5Dm+Kq7jJzIZUnMPmaiSnk/FBYI="
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+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
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@@ -816,12 +1388,33 @@
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+    "sprintf-js": {
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+      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.1.2.tgz",
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+      "dev": true
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       "integrity": "sha1-OeipjQRNFQZgq+SmgIrPcLt7yZE=",
       "dev": true
     },
+    "supports-color": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
+      "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
+      "dev": true,
+      "requires": {
+        "has-flag": "^4.0.0"
+      }
+    },
+    "supports-preserve-symlinks-flag": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/supports-preserve-symlinks-flag/-/supports-preserve-symlinks-flag-1.0.0.tgz",
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@@ -832,6 +1425,35 @@
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+      "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
+      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU="
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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"
+      }
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+    "unbzip2-stream": {
+      "version": "1.4.3",
+      "resolved": "https://registry.npmjs.org/unbzip2-stream/-/unbzip2-stream-1.4.3.tgz",
+      "integrity": "sha512-mlExGW4w71ebDJviH16lQLtZS32VKqsSfk80GCfUlwT/4/hNRFsoscrF/c++9xinkMzECL1uL9DDwXqFWkruPg==",
+      "requires": {
+        "buffer": "^5.2.1",
+        "through": "^2.3.8"
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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
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     "underscore": {
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@@ -856,11 +1478,30 @@
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-      "integrity": "sha1-18D6KvXVoaZ/QlPa7pgTLnM/Dxk=",
+      "version": "3.3.6",
+      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-3.3.6.tgz",
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+      "dev": true,
+      "requires": {
+        "sprintf-js": "^1.1.1",
+        "util-deprecate": "^1.0.2"
+      }
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+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
       "dev": true
     },
+    "v8flags": {
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+      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.2.0.tgz",
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+      "dev": true,
+      "requires": {
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+      }
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@@ -868,10 +1509,13 @@
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-      "integrity": "sha1-RgwdoPgQED0DIam2M6+eV15kSG8=",
-      "dev": true
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
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+      "dev": true,
+      "requires": {
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diff --git a/package.json b/package.json
index 49e8d60..0cdaca5 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "lsa": "./bin/lsa"
   },
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-    "grunt": "~0.4.0",
+    "grunt": "~1.5.2",
     "grunt-contrib-coffee": "~0.9.0",
     "coffeescript": "~1.7.0",
     "grunt-cli": "~0.1.6",