diff --git a/package-lock.json b/package-lock.json
index fe48d9a..5d5474e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,11 +23,30 @@
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       "integrity": "sha1-q11PuIP1loFtNRX495HAr0ht1ic="
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+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.2.tgz",
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+      "requires": {
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+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.4.1",
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       "resolved": "https://registry.npmjs.org/amdefine/-/amdefine-1.0.1.tgz",
       "integrity": "sha1-SlKCrBZHKek2Gbz9OtFR+BfOkfU="
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+    "ansi-colors": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-1.1.0.tgz",
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       "resolved": "https://registry.npmjs.org/ansi-cyan/-/ansi-cyan-0.1.1.tgz",
@@ -87,9 +106,9 @@
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-      "integrity": "sha1-u13KOCu5TwXhUZQ3PRb9O6HKEQ0=",
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz",
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@@ -158,6 +177,11 @@
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       "integrity": "sha1-7nQAlBMALYTOxyGcasgRgS5yMWA="
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+      "resolved": "https://registry.npmjs.org/assign-symbols/-/assign-symbols-1.0.0.tgz",
+      "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c="
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@@ -212,9 +236,9 @@
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-      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.7.0.tgz",
-      "integrity": "sha512-32NDda82rhwD9/JBCCkB+MRYDp0oSvlo2IL6rQWA10PQi7tDUM3eqMSltXmY+Oyl/7N3P3qNtAlv7X0d9bI28w=="
+      "version": "1.9.1",
+      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.9.1.tgz",
+      "integrity": "sha512-wMHVg2EOHaMRxbzgFJ9gtjOOCrI80OHLG14rxi28XwOW8ux6IiEbRCGGGqCtdAIg4FQCbW20k9RsT4y3gJlFug=="
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@@ -242,10 +266,9 @@
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-      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.1.tgz",
-      "integrity": "sha1-Y7xdy2EzG5K8Bf1SiVPDNGKgb40=",
-      "optional": true,
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
+      "integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
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@@ -637,9 +660,9 @@
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+          "version": "4.1.5",
+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-4.1.5.tgz",
+          "integrity": "sha512-sWZlbEP2OsHNkXrMl5GYk/jKk70MBng6UU4YI/qGDYbgf6YbP4EvmqISbXCoJiRKs+1bSpFHVgQxvJ17F2li5g==",
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@@ -848,12 +871,12 @@
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-      "integrity": "sha1-D8c6ntXw1Tw4GTOYUj735UN3dQU=",
-      "optional": true,
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+      "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz",
+      "integrity": "sha1-OoOpBOVDUyh4dMVkt1SThoSamMk=",
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-        "jsbn": "~0.1.0"
+        "jsbn": "~0.1.0",
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@@ -1080,6 +1103,16 @@
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+      "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.1.tgz",
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+    },
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+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz",
+      "integrity": "sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw=="
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@@ -1235,7 +1268,8 @@
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+          "bundled": true,
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@@ -1253,11 +1287,13 @@
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+          "bundled": true,
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@@ -1270,15 +1306,18 @@
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+          "bundled": true,
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-          "bundled": true
+          "bundled": true,
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@@ -1381,7 +1420,8 @@
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@@ -1391,6 +1431,7 @@
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@@ -1403,17 +1444,20 @@
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           "bundled": true,
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           "requires": {
             "brace-expansion": "^1.1.7"
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         "minimist": {
           "version": "0.0.8",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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           "bundled": true,
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@@ -1430,6 +1474,7 @@
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           "bundled": true,
+          "optional": true,
           "requires": {
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@@ -1502,7 +1547,8 @@
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@@ -1512,6 +1558,7 @@
         "once": {
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           "bundled": true,
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@@ -1587,7 +1634,8 @@
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@@ -1617,6 +1665,7 @@
         "string-width": {
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           "bundled": true,
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@@ -1634,6 +1683,7 @@
         "strip-ansi": {
           "version": "3.0.1",
           "bundled": true,
+          "optional": true,
           "requires": {
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@@ -1672,18 +1722,20 @@
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+          "bundled": true,
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-          "bundled": true
+          "bundled": true,
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-      "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.11.tgz",
-      "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
+      "version": "1.0.12",
+      "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.12.tgz",
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@@ -1692,16 +1744,16 @@
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-          "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0="
+          "version": "1.2.5",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
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-          "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
+          "version": "0.5.5",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz",
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-            "minimist": "0.0.8"
+            "minimist": "^1.2.5"
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@@ -2064,15 +2116,107 @@
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+      "resolved": "https://registry.npmjs.org/gulp-sass/-/gulp-sass-4.1.0.tgz",
+      "integrity": "sha512-xIiwp9nkBLcJDpmYHbEHdoWZv+j+WtYaKD6Zil/67F3nrAaZtWYN5mDwerdo7EvcdBenSAj7Xb2hx2DqURLGdA==",
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-        "gulp-util": "^3.0",
-        "lodash.clonedeep": "^4.3.2",
+        "chalk": "^2.3.0",
+        "lodash": "^4.17.11",
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+        "plugin-error": "^1.0.1",
+        "replace-ext": "^1.0.0",
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+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg="
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+        "ansi-styles": {
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+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
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+          "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-4.0.0.tgz",
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+          "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ="
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+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
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+          "integrity": "sha1-Jqcarwc7OfshJxcnRhMcJwQCjbg=",
+          "requires": {
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+          "resolved": "https://registry.npmjs.org/is-extendable/-/is-extendable-1.0.1.tgz",
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+          "requires": {
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+          }
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+        "lodash": {
+          "version": "4.17.15",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
+          "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A=="
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+          "resolved": "https://registry.npmjs.org/plugin-error/-/plugin-error-1.0.1.tgz",
+          "integrity": "sha512-L1zP0dk7vGweZME2i+EeakvUNqSrdiI3F91TwEoYiGrAfUXmVv6fJIq4g82PAXxNsWOp0J7ZqQy/3Szz0ajTxA==",
+          "requires": {
+            "ansi-colors": "^1.0.1",
+            "arr-diff": "^4.0.0",
+            "arr-union": "^3.1.0",
+            "extend-shallow": "^3.0.2"
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+          "resolved": "https://registry.npmjs.org/replace-ext/-/replace-ext-1.0.0.tgz",
+          "integrity": "sha1-3mMSg3P8v3w8z6TeWkgMRaZ5WOs="
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+        "strip-ansi": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "requires": {
+            "ansi-regex": "^3.0.0"
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+        "supports-color": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+          "requires": {
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+          }
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@@ -2115,6 +2259,11 @@
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+      "resolved": "https://registry.npmjs.org/har-schema/-/har-schema-2.0.0.tgz",
+      "integrity": "sha1-qUwiJOvKwEeCoNkDVSHyRzW37JI="
+    },
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@@ -2241,9 +2390,9 @@
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-      "resolved": "https://registry.npmjs.org/in-publish/-/in-publish-2.0.0.tgz",
-      "integrity": "sha1-4g/146KvwmkDILbcVSaCqcf631E="
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/in-publish/-/in-publish-2.0.1.tgz",
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@@ -2388,6 +2537,21 @@
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+      "resolved": "https://registry.npmjs.org/is-plain-object/-/is-plain-object-2.0.4.tgz",
+      "integrity": "sha512-h5PpgXkWitc38BBMYawTYMWJHFZJVnBquFE57xFpjB8pJFiF6gZ+bU+WyI/yqXiFR5mdLsgYNaPe8uao6Uv9Og==",
+      "requires": {
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+      },
+      "dependencies": {
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+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+        }
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@@ -2458,21 +2622,25 @@
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@@ -3415,6 +3749,11 @@
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-      "integrity": "sha1-wNWmOycYgArY4esPpSachN1BhF4="
+      "version": "2.1.1",
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+    },
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@@ -3752,9 +4106,9 @@
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+          "version": "4.17.15",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
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@@ -4052,9 +4406,9 @@
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-      "integrity": "sha1-Ew9Zde3a2WPx1W+SuaxsUfqfg+s=",
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@@ -4063,13 +4417,17 @@
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         "getpass": "^0.1.1",
         "jsbn": "~0.1.0",
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-          "integrity": "sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y="
+          "version": "0.2.4",
+          "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
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+          "requires": {
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+          }
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@@ -4089,9 +4447,9 @@
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-      "integrity": "sha1-osfIWH5U2UJ+qe2zrD8s1SLfN4s=",
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+      "resolved": "https://registry.npmjs.org/stdout-stream/-/stdout-stream-1.4.1.tgz",
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@@ -4160,12 +4518,12 @@
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-      "integrity": "sha1-jk0qJWwOIYXGsYrWlK7JaLg8sdE=",
+      "version": "2.2.2",
+      "resolved": "https://registry.npmjs.org/tar/-/tar-2.2.2.tgz",
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-        "fstream": "^1.0.2",
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@@ -4236,24 +4594,47 @@
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-      "integrity": "sha1-fskRMJJHZsf1c74wIMNPj9/QDWI=",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/true-case-path/-/true-case-path-1.0.3.tgz",
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       "requires": {
-        "glob": "^6.0.4"
+        "glob": "^7.1.2"
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+        "balanced-match": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+          "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+        },
+        "brace-expansion": {
+          "version": "1.1.11",
+          "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+          "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
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+            "concat-map": "0.0.1"
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-          "version": "6.0.4",
-          "resolved": "https://registry.npmjs.org/glob/-/glob-6.0.4.tgz",
-          "integrity": "sha1-DwiGD2oVUSey+t1PnOJLGqtuTSI=",
+          "version": "7.1.6",
+          "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
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           "requires": {
+            "fs.realpath": "^1.0.0",
             "inflight": "^1.0.4",
             "inherits": "2",
-            "minimatch": "2 || 3",
+            "minimatch": "^3.0.4",
             "once": "^1.3.0",
             "path-is-absolute": "^1.0.0"
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+        },
+        "minimatch": {
+          "version": "3.0.4",
+          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+          "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+          "requires": {
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@@ -4265,8 +4646,7 @@
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-      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
-      "optional": true
+      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q="
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@@ -4303,6 +4683,14 @@
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       "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
     },
+    "uri-js": {
+      "version": "4.2.2",
+      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
+      "integrity": "sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==",
+      "requires": {
+        "punycode": "^2.1.0"
+      }
+    },
     "user-home": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/user-home/-/user-home-1.1.1.tgz",
@@ -4318,6 +4706,11 @@
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       "integrity": "sha1-ApT7kiu5N1FTVBxPcJYjHyh8ivg="
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+    "uuid": {
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.4.0.tgz",
+      "integrity": "sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A=="
+    },
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@@ -4487,11 +4880,11 @@
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+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
+      "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
       "requires": {
-        "string-width": "^1.0.2"
+        "string-width": "^1.0.2 || 2"
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diff --git a/package.json b/package.json
index efaa251..9c06dc0 100644
--- a/package.json
+++ b/package.json
@@ -27,6 +27,6 @@
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     "gulp-cli": "^1.2.2",
     "gulp-plumber": "^1.1.0",
-    "gulp-sass": "^3.1.0"
+    "gulp-sass": "^4.1.0"
   }
 }