diff --git a/package-lock.json b/package-lock.json
index 668d781..f684b3b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,9 +1,14 @@
 {
   "name": "vue-sticky-nav",
-  "version": "1.1.6",
+  "version": "1.1.9",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@tweenjs/tween.js": {
+      "version": "18.4.2",
+      "resolved": "https://registry.npmjs.org/@tweenjs/tween.js/-/tween.js-18.4.2.tgz",
+      "integrity": "sha512-HQLguhuQoPEqz42u/MnznakBe038WWAFKwC0qNgvzEetZjOLvafh1bTdUhQ1JZapR/hKV5cuCa8mC0Y4rRuoeg=="
+    },
     "abbrev": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
@@ -55,6 +60,12 @@
         "uri-js": "^4.2.2"
       }
     },
+    "ajv-errors": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/ajv-errors/-/ajv-errors-1.0.1.tgz",
+      "integrity": "sha512-DCRfO/4nQ+89p/RK43i8Ezd41EqdGIU4ld7nGF8OQ14oc/we5rEntLCUa7+jrn3nn83BosfwZA0wb4pon2o8iQ==",
+      "dev": true
+    },
     "ajv-keywords": {
       "version": "3.4.1",
       "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-3.4.1.tgz",
@@ -84,6 +95,12 @@
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       "dev": true
     },
+    "ansi-colors": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-3.2.4.tgz",
+      "integrity": "sha512-hHUXGagefjN2iRrID63xckIvotOXOojhQKWIPUZ4mNUZ9nLZW+7FMNoE1lOkEhNWYsx/7ysGIuJYCiMAA9FnrA==",
+      "dev": true
+    },
     "ansi-html": {
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       "resolved": "https://registry.npmjs.org/ansi-html/-/ansi-html-0.0.7.tgz",
@@ -178,16 +195,6 @@
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       "dev": true
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-    "array-includes": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/array-includes/-/array-includes-3.0.3.tgz",
-      "integrity": "sha1-GEtI9i2S10UrsxsyMWXH+L0CJm0=",
-      "dev": true,
-      "requires": {
-        "define-properties": "^1.1.2",
-        "es-abstract": "^1.7.0"
-      }
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       "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.2.tgz",
@@ -302,27 +309,110 @@
       "dev": true
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-      "version": "6.7.7",
-      "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-6.7.7.tgz",
-      "integrity": "sha1-Hb0cg1ZY41zj+ZhAmdsAWFx4IBQ=",
+      "version": "9.7.2",
+      "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-9.7.2.tgz",
+      "integrity": "sha512-LCAfcdej1182uVvPOZnytbq61AhnOZ/4JelDaJGDeNwewyU1AMaNthcHsyz1NRjTmd2FkurMckLWfkHg3Z//KA==",
       "dev": true,
       "requires": {
-        "browserslist": "^1.7.6",
-        "caniuse-db": "^1.0.30000634",
+        "browserslist": "^4.7.3",
+        "caniuse-lite": "^1.0.30001010",
+        "chalk": "^2.4.2",
         "normalize-range": "^0.1.2",
         "num2fraction": "^1.2.2",
-        "postcss": "^5.2.16",
-        "postcss-value-parser": "^3.2.3"
+        "postcss": "^7.0.23",
+        "postcss-value-parser": "^4.0.2"
       },
       "dependencies": {
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
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+          "dev": true,
+          "requires": {
+            "color-convert": "^1.9.0"
+          }
+        },
         "browserslist": {
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-          "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-1.7.7.tgz",
-          "integrity": "sha1-C9dnBCWL6CmyOYu1Dkti0aFmsLk=",
+          "version": "4.7.3",
+          "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.7.3.tgz",
+          "integrity": "sha512-jWvmhqYpx+9EZm/FxcZSbUZyDEvDTLDi3nSAKbzEkyWvtI0mNSmUosey+5awDW1RUlrgXbQb5A6qY1xQH9U6MQ==",
           "dev": true,
           "requires": {
-            "caniuse-db": "^1.0.30000639",
-            "electron-to-chromium": "^1.2.7"
+            "caniuse-lite": "^1.0.30001010",
+            "electron-to-chromium": "^1.3.306",
+            "node-releases": "^1.1.40"
+          }
+        },
+        "caniuse-lite": {
+          "version": "1.0.30001012",
+          "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001012.tgz",
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+          "dev": true
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+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
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+          "dev": true,
+          "requires": {
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+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
+          }
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+        "electron-to-chromium": {
+          "version": "1.3.314",
+          "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.314.tgz",
+          "integrity": "sha512-IKDR/xCxKFhPts7h+VaSXS02Z1mznP3fli1BbXWXeN89i2gCzKraU8qLpEid8YzKcmZdZD3Mly3cn5/lY9xsBQ==",
+          "dev": true
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+        "has-flag": {
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+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
+          "dev": true
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+        "postcss": {
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+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.23.tgz",
+          "integrity": "sha512-hOlMf3ouRIFXD+j2VJecwssTwbvsPGJVMzupptg+85WA+i7MwyrydmQAgY3R+m0Bc0exunhbJmijy8u8+vufuQ==",
+          "dev": true,
+          "requires": {
+            "chalk": "^2.4.2",
+            "source-map": "^0.6.1",
+            "supports-color": "^6.1.0"
+          },
+          "dependencies": {
+            "supports-color": {
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+              "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.1.0.tgz",
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+              "dev": true,
+              "requires": {
+                "has-flag": "^3.0.0"
+              }
+            }
+          }
+        },
+        "postcss-value-parser": {
+          "version": "4.0.2",
+          "resolved": "https://registry.npmjs.org/postcss-value-parser/-/postcss-value-parser-4.0.2.tgz",
+          "integrity": "sha512-LmeoohTpp/K4UiyQCwuGWlONxXamGzCMtFxLq4W1nZVGIQLYvMCJx3yAF9qyyuFpflABI9yVdtJAqbihOsCsJQ==",
+          "dev": true
+        },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        },
+        "supports-color": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^3.0.0"
           }
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@@ -1947,6 +2037,32 @@
         "postcss-unique-selectors": "^2.0.2",
         "postcss-value-parser": "^3.2.3",
         "postcss-zindex": "^2.0.1"
+      },
+      "dependencies": {
+        "autoprefixer": {
+          "version": "6.7.7",
+          "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-6.7.7.tgz",
+          "integrity": "sha1-Hb0cg1ZY41zj+ZhAmdsAWFx4IBQ=",
+          "dev": true,
+          "requires": {
+            "browserslist": "^1.7.6",
+            "caniuse-db": "^1.0.30000634",
+            "normalize-range": "^0.1.2",
+            "num2fraction": "^1.2.2",
+            "postcss": "^5.2.16",
+            "postcss-value-parser": "^3.2.3"
+          }
+        },
+        "browserslist": {
+          "version": "1.7.7",
+          "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-1.7.7.tgz",
+          "integrity": "sha1-C9dnBCWL6CmyOYu1Dkti0aFmsLk=",
+          "dev": true,
+          "requires": {
+            "caniuse-db": "^1.0.30000639",
+            "electron-to-chromium": "^1.2.7"
+          }
+        }
       }
     },
     "csso": {
@@ -2015,9 +2131,9 @@
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-      "resolved": "https://registry.npmjs.org/deep-equal/-/deep-equal-1.1.0.tgz",
-      "integrity": "sha512-ZbfWJq/wN1Z273o7mUSjILYqehAktR2NVoSrOukDkU9kg2v/Uv89yU4Cvz8seJeAmtN5oqiefKq8FPuXOboqLw==",
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/deep-equal/-/deep-equal-1.1.1.tgz",
+      "integrity": "sha512-yd9c5AdiqVcR+JjcwUQb9DkhJc8ngNr0MahEBGvDiJw8puWab2yZlh+nkasOnZP+EGTAP6rRp2JzJhJZzvNF8g==",
       "dev": true,
       "requires": {
         "is-arguments": "^1.0.4",
@@ -2028,6 +2144,33 @@
         "regexp.prototype.flags": "^1.2.0"
       }
     },
+    "default-gateway": {
+      "version": "2.7.2",
+      "resolved": "https://registry.npmjs.org/default-gateway/-/default-gateway-2.7.2.tgz",
+      "integrity": "sha512-lAc4i9QJR0YHSDFdzeBQKfZ1SRDG3hsJNEkrpcZa8QhBfidLAilT60BDEIVUUGqosFp425KOgB3uYqcnQrWafQ==",
+      "dev": true,
+      "requires": {
+        "execa": "^0.10.0",
+        "ip-regex": "^2.1.0"
+      },
+      "dependencies": {
+        "execa": {
+          "version": "0.10.0",
+          "resolved": "https://registry.npmjs.org/execa/-/execa-0.10.0.tgz",
+          "integrity": "sha512-7XOMnz8Ynx1gGo/3hyV9loYNPWM94jG3+3T3Y8tsfSstFmETmENCMU/A/zj8Lyaj1lkgEepKepvd6240tBRvlw==",
+          "dev": true,
+          "requires": {
+            "cross-spawn": "^6.0.0",
+            "get-stream": "^3.0.0",
+            "is-stream": "^1.1.0",
+            "npm-run-path": "^2.0.0",
+            "p-finally": "^1.0.0",
+            "signal-exit": "^3.0.0",
+            "strip-eof": "^1.0.0"
+          }
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@@ -2244,6 +2387,15 @@
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       "dev": true
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+      "version": "1.4.4",
+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
+      "integrity": "sha512-+uw1inIHVPQoaVuHzRyXd21icM+cnt4CzD5rW+NC1wjOUSTOs+Te7FOv7AhN7vS9x/oIyhLP5PR1H+phQAHu5Q==",
+      "dev": true,
+      "requires": {
+        "once": "^1.4.0"
+      }
+    },
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@@ -2274,35 +2426,6 @@
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-      "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.16.0.tgz",
-      "integrity": "sha512-xdQnfykZ9JMEiasTAJZJdMWCQ1Vm00NBw79/AWi7ELfZuuPCSOMDZbT9mkOfSctVtfhb+sAAzrm+j//GjjLHLg==",
-      "dev": true,
-      "requires": {
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-        "function-bind": "^1.1.1",
-        "has": "^1.0.3",
-        "has-symbols": "^1.0.0",
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-        "is-regex": "^1.0.4",
-        "object-inspect": "^1.6.0",
-        "object-keys": "^1.1.1",
-        "string.prototype.trimleft": "^2.1.0",
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-    "es-to-primitive": {
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-      "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.2.0.tgz",
-      "integrity": "sha512-qZryBOJjV//LaxLTV6UC//WewneB3LcXOL9NP++ozKVXsIIIpm/2c13UDiD9Jp2eThsecw9m3jPqDwTyobcdbg==",
-      "dev": true,
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-        "is-date-object": "^1.0.1",
-        "is-symbol": "^1.0.2"
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@@ -2466,12 +2589,12 @@
       "dev": true
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-      "resolved": "https://registry.npmjs.org/eventsource/-/eventsource-0.1.6.tgz",
-      "integrity": "sha1-Cs7ehJ7X3RzMMsgRuxG5RNTykjI=",
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/eventsource/-/eventsource-1.0.7.tgz",
+      "integrity": "sha512-4Ln17+vVT0k8aWq+t/bF5arcS3EpT9gYtW66EPacdj/mAFevznsnyoHLPy2BA8gbIQeIHoPsvwmfBftfcG//BQ==",
       "dev": true,
       "requires": {
-        "original": ">=0.0.5"
+        "original": "^1.0.0"
       }
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@@ -2894,7 +3017,8 @@
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           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -2915,12 +3039,14 @@
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           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -2935,17 +3061,20 @@
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           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
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           "version": "1.1.0",
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@@ -3062,7 +3191,8 @@
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           "version": "2.0.3",
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-          "dev": true
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@@ -3074,6 +3204,7 @@
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           "dev": true,
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@@ -3088,6 +3219,7 @@
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@@ -3095,12 +3227,14 @@
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-          "dev": true
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           "version": "2.3.5",
           "bundled": true,
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@@ -3119,6 +3253,7 @@
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@@ -3199,7 +3334,8 @@
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@@ -3211,6 +3347,7 @@
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@@ -3296,7 +3433,8 @@
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@@ -3332,6 +3470,7 @@
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@@ -3351,6 +3490,7 @@
           "version": "3.0.1",
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+          "optional": true,
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@@ -3394,12 +3534,14 @@
         "wrappy": {
           "version": "1.0.2",
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+          "optional": true
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           "version": "3.0.3",
           "bundled": true,
-          "dev": true
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@@ -3617,12 +3759,6 @@
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@@ -3789,15 +3925,15 @@
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+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/xregexp/-/xregexp-4.0.0.tgz",
+      "integrity": "sha512-PHyM+sQouu7xspQQwELlGwwd05mXUFqwFYfqPO0cC7x4fxyHnnuetmQr6CjJiafIDoH4MogHb9dOoJzR/Y4rFg==",
+      "dev": true
+    },
     "xtend": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
diff --git a/package.json b/package.json
index 4c9bab7..0e8ef1f 100644
--- a/package.json
+++ b/package.json
@@ -55,6 +55,6 @@
     "vue-loader": "^13.0.5",
     "vue-template-compiler": "^2.4.4",
     "webpack": "^3.6.0",
-    "webpack-dev-server": "^2.9.1"
+    "webpack-dev-server": "^3.1.11"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index ad918a8..39519bb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -31,6 +31,10 @@ acorn@^5.0.0:
   version "5.7.3"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
 
+ajv-errors@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/ajv-errors/-/ajv-errors-1.0.1.tgz#f35986aceb91afadec4102fbd85014950cefa64d"
+
 ajv-keywords@^3.1.0:
   version "3.4.1"
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-3.4.1.tgz#ef916e271c64ac12171fd8384eaae6b2345854da"
@@ -60,6 +64,10 @@ amdefine@>=0.0.4:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/amdefine/-/amdefine-1.0.1.tgz#4a5282ac164729e93619bcfd3ad151f817ce91f5"
 
+ansi-colors@^3.0.0:
+  version "3.2.4"
+  resolved "https://registry.yarnpkg.com/ansi-colors/-/ansi-colors-3.2.4.tgz#e3a3da4bfbae6c86a9c285625de124a234026fbf"
+
 ansi-html@0.0.7:
   version "0.0.7"
   resolved "https://registry.yarnpkg.com/ansi-html/-/ansi-html-0.0.7.tgz#813584021962a9e9e6fd039f940d12f56ca7859e"
@@ -130,13 +138,6 @@ array-flatten@^2.1.0:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/array-flatten/-/array-flatten-2.1.2.tgz#24ef80a28c1a893617e2149b0c6d0d788293b099"
 
-array-includes@^3.0.3:
-  version "3.0.3"
-  resolved "https://registry.yarnpkg.com/array-includes/-/array-includes-3.0.3.tgz#184b48f62d92d7452bb31b323165c7f8bd02266d"
-  dependencies:
-    define-properties "^1.1.2"
-    es-abstract "^1.7.0"
-
 array-union@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/array-union/-/array-union-1.0.2.tgz#9a34410e4f4e3da23dea375be5be70f24778ec39"
@@ -1030,7 +1031,7 @@ chalk@^2.4.1, chalk@^2.4.2:
     escape-string-regexp "^1.0.5"
     supports-color "^5.3.0"
 
-chokidar@^2.0.2, chokidar@^2.1.2:
+chokidar@^2.0.0, chokidar@^2.0.2:
   version "2.1.8"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-2.1.8.tgz#804b3a7b6a99358c3c5c61e71d8728f041cff917"
   dependencies:
@@ -1090,6 +1091,14 @@ cliui@^3.2.0:
     strip-ansi "^3.0.1"
     wrap-ansi "^2.0.0"
 
+cliui@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-4.1.0.tgz#348422dbe82d800b3022eef4f6ac10bf2e4d1b49"
+  dependencies:
+    string-width "^2.1.1"
+    strip-ansi "^4.0.0"
+    wrap-ansi "^2.0.0"
+
 clone-deep@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/clone-deep/-/clone-deep-4.0.1.tgz#c19fd9bdbbf85942b4fd979c84dcf7d5f07c2387"
@@ -1179,7 +1188,7 @@ compressible@~2.0.16:
   dependencies:
     mime-db ">= 1.40.0 < 2"
 
-compression@^1.7.3:
+compression@^1.5.2:
   version "1.7.4"
   resolved "https://registry.yarnpkg.com/compression/-/compression-1.7.4.tgz#95523eff170ca57c29a0ca41e6fe131f41e5bb8f"
   dependencies:
@@ -1314,7 +1323,7 @@ cross-spawn@^5.0.1:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
-cross-spawn@^6.0.5:
+cross-spawn@^6.0.0, cross-spawn@^6.0.5:
   version "6.0.5"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
   dependencies:
@@ -1442,13 +1451,13 @@ de-indent@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/de-indent/-/de-indent-1.0.2.tgz#b2038e846dc33baa5796128d0804b455b8c1e21d"
 
-debug@2.6.9, debug@^2.2.0, debug@^2.3.3, debug@^2.6.6, debug@^2.6.8, debug@^2.6.9:
+debug@2.6.9, debug@^2.2.0, debug@^2.3.3, debug@^2.6.8, debug@^2.6.9:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   dependencies:
     ms "2.0.0"
 
-debug@^3.0.0, debug@^3.1.0, debug@^3.1.1, debug@^3.2.6:
+debug@^3.0.0, debug@^3.1.0, debug@^3.1.1, debug@^3.2.5, debug@^3.2.6:
   version "3.2.6"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.6.tgz#e83d17de16d8a7efb7717edbe5fb10135eee629b"
   dependencies:
@@ -1464,6 +1473,12 @@ decamelize@^1.0.0, decamelize@^1.1.1, decamelize@^1.1.2:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
 
+decamelize@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-2.0.0.tgz#656d7bbc8094c4c788ea53c5840908c9c7d063c7"
+  dependencies:
+    xregexp "4.0.0"
+
 decode-uri-component@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
@@ -1483,7 +1498,14 @@ deep-extend@^0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.6.0.tgz#c4fa7c95404a17a9c3e8ca7e1537312b736330ac"
 
-define-properties@^1.1.2, define-properties@^1.1.3:
+default-gateway@^2.6.0:
+  version "2.7.2"
+  resolved "https://registry.yarnpkg.com/default-gateway/-/default-gateway-2.7.2.tgz#b7ef339e5e024b045467af403d50348db4642d0f"
+  dependencies:
+    execa "^0.10.0"
+    ip-regex "^2.1.0"
+
+define-properties@^1.1.2:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/define-properties/-/define-properties-1.1.3.tgz#cf88da6cbee26fe6db7094f61d870cbd84cee9f1"
   dependencies:
@@ -1628,6 +1650,12 @@ encodeurl@~1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/encodeurl/-/encodeurl-1.0.2.tgz#ad3ff4c86ec2d029322f5a02c3a9a606c95b3f59"
 
+end-of-stream@^1.1.0:
+  version "1.4.4"
+  resolved "https://registry.yarnpkg.com/end-of-stream/-/end-of-stream-1.4.4.tgz#5ae64a5f45057baf3626ec14da0ca5e4b2431eb0"
+  dependencies:
+    once "^1.4.0"
+
 enhanced-resolve@^3.4.0:
   version "3.4.1"
   resolved "https://registry.yarnpkg.com/enhanced-resolve/-/enhanced-resolve-3.4.1.tgz#0421e339fd71419b3da13d129b3979040230476e"
@@ -1649,29 +1677,6 @@ error-ex@^1.2.0:
   dependencies:
     is-arrayish "^0.2.1"
 
-es-abstract@^1.7.0:
-  version "1.16.0"
-  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.16.0.tgz#d3a26dc9c3283ac9750dca569586e976d9dcc06d"
-  dependencies:
-    es-to-primitive "^1.2.0"
-    function-bind "^1.1.1"
-    has "^1.0.3"
-    has-symbols "^1.0.0"
-    is-callable "^1.1.4"
-    is-regex "^1.0.4"
-    object-inspect "^1.6.0"
-    object-keys "^1.1.1"
-    string.prototype.trimleft "^2.1.0"
-    string.prototype.trimright "^2.1.0"
-
-es-to-primitive@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.2.0.tgz#edf72478033456e8dda8ef09e00ad9650707f377"
-  dependencies:
-    is-callable "^1.1.4"
-    is-date-object "^1.0.1"
-    is-symbol "^1.0.2"
-
 es5-ext@^0.10.35, es5-ext@^0.10.46, es5-ext@^0.10.50, es5-ext@~0.10.14:
   version "0.10.52"
   resolved "https://registry.yarnpkg.com/es5-ext/-/es5-ext-0.10.52.tgz#bb21777e919a04263736ded120a9d665f10ea63f"
@@ -1790,11 +1795,11 @@ events@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/events/-/events-3.0.0.tgz#9a0a0dfaf62893d92b875b8f2698ca4114973e88"
 
-eventsource@0.1.6:
-  version "0.1.6"
-  resolved "https://registry.yarnpkg.com/eventsource/-/eventsource-0.1.6.tgz#0acede849ed7dd1ccc32c811bb11b944d4f29232"
+eventsource@^1.0.7:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/eventsource/-/eventsource-1.0.7.tgz#8fbc72c93fcd34088090bc0a4e64f4b5cee6d8d0"
   dependencies:
-    original ">=0.0.5"
+    original "^1.0.0"
 
 evp_bytestokey@^1.0.0, evp_bytestokey@^1.0.3:
   version "1.0.3"
@@ -1803,6 +1808,18 @@ evp_bytestokey@^1.0.0, evp_bytestokey@^1.0.3:
     md5.js "^1.3.4"
     safe-buffer "^5.1.1"
 
+execa@^0.10.0:
+  version "0.10.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-0.10.0.tgz#ff456a8f53f90f8eccc71a96d11bdfc7f082cb50"
+  dependencies:
+    cross-spawn "^6.0.0"
+    get-stream "^3.0.0"
+    is-stream "^1.1.0"
+    npm-run-path "^2.0.0"
+    p-finally "^1.0.0"
+    signal-exit "^3.0.0"
+    strip-eof "^1.0.0"
+
 execa@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/execa/-/execa-0.7.0.tgz#944becd34cc41ee32a63a9faf27ad5a65fc59777"
@@ -1815,6 +1832,18 @@ execa@^0.7.0:
     signal-exit "^3.0.0"
     strip-eof "^1.0.0"
 
+execa@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-1.0.0.tgz#c6236a5bb4df6d6f15e88e7f017798216749ddd8"
+  dependencies:
+    cross-spawn "^6.0.0"
+    get-stream "^4.0.0"
+    is-stream "^1.1.0"
+    npm-run-path "^2.0.0"
+    p-finally "^1.0.0"
+    signal-exit "^3.0.0"
+    strip-eof "^1.0.0"
+
 expand-brackets@^2.1.4:
   version "2.1.4"
   resolved "https://registry.yarnpkg.com/expand-brackets/-/expand-brackets-2.1.4.tgz#b77735e315ce30f6b6eff0f83b04151a22449622"
@@ -1924,7 +1953,7 @@ faye-websocket@^0.10.0:
   dependencies:
     websocket-driver ">=0.5.1"
 
-faye-websocket@~0.11.0:
+faye-websocket@~0.11.1:
   version "0.11.3"
   resolved "https://registry.yarnpkg.com/faye-websocket/-/faye-websocket-0.11.3.tgz#5c0e9a8968e8912c286639fde977a8b209f2508e"
   dependencies:
@@ -1979,6 +2008,12 @@ find-up@^2.0.0, find-up@^2.1.0:
   dependencies:
     locate-path "^2.0.0"
 
+find-up@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-3.0.0.tgz#49169f1d7993430646da61ecc5ae355c21c97b73"
+  dependencies:
+    locate-path "^3.0.0"
+
 flatten@^1.0.2:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/flatten/-/flatten-1.0.3.tgz#c1283ac9f27b368abc1e36d1ff7b04501a30356b"
@@ -2080,6 +2115,12 @@ get-stream@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-3.0.0.tgz#8e943d1358dc37555054ecbe2edb05aa174ede14"
 
+get-stream@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-4.1.0.tgz#c1b255575f3dc21d59bfc79cd3d2b46b1c3a54b5"
+  dependencies:
+    pump "^3.0.0"
+
 get-value@^2.0.3, get-value@^2.0.6:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/get-value/-/get-value-2.0.6.tgz#dc15ca1c672387ca76bd37ac0a395ba2042a2c28"
@@ -2167,10 +2208,6 @@ has-flag@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
 
-has-symbols@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.0.tgz#ba1a8f1af2a0fc39650f5c850367704122063b44"
-
 has-unicode@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/has-unicode/-/has-unicode-2.0.1.tgz#e0e6fe6a28cf51138855e086d1691e771de2a8b9"
@@ -2202,7 +2239,7 @@ has-values@^1.0.0:
     is-number "^3.0.0"
     kind-of "^4.0.0"
 
-has@^1.0.1, has@^1.0.3:
+has@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/has/-/has-1.0.3.tgz#722d7cbfc1f6aa8241f16dd814e011e1f41e8796"
   dependencies:
@@ -2303,16 +2340,16 @@ http-errors@~1.7.2:
   version "0.4.10"
   resolved "https://registry.yarnpkg.com/http-parser-js/-/http-parser-js-0.4.10.tgz#92c9c1374c35085f75db359ec56cc257cbb93fa4"
 
-http-proxy-middleware@^0.19.1:
-  version "0.19.1"
-  resolved "https://registry.yarnpkg.com/http-proxy-middleware/-/http-proxy-middleware-0.19.1.tgz#183c7dc4aa1479150306498c210cdaf96080a43a"
+http-proxy-middleware@~0.18.0:
+  version "0.18.0"
+  resolved "https://registry.yarnpkg.com/http-proxy-middleware/-/http-proxy-middleware-0.18.0.tgz#0987e6bb5a5606e5a69168d8f967a87f15dd8aab"
   dependencies:
-    http-proxy "^1.17.0"
+    http-proxy "^1.16.2"
     is-glob "^4.0.0"
-    lodash "^4.17.11"
-    micromatch "^3.1.10"
+    lodash "^4.17.5"
+    micromatch "^3.1.9"
 
-http-proxy@^1.17.0:
+http-proxy@^1.16.2:
   version "1.18.0"
   resolved "https://registry.yarnpkg.com/http-proxy/-/http-proxy-1.18.0.tgz#dbe55f63e75a347db7f3d99974f2692a314a6a3a"
   dependencies:
@@ -2358,11 +2395,11 @@ ignore-walk@^3.0.1:
   dependencies:
     minimatch "^3.0.4"
 
-import-local@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/import-local/-/import-local-1.0.0.tgz#5e4ffdc03f4fe6c009c6729beb29631c2f8227bc"
+import-local@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/import-local/-/import-local-2.0.0.tgz#55070be38a5993cf18ef6db7e961f5bee5c5a09d"
   dependencies:
-    pkg-dir "^2.0.0"
+    pkg-dir "^3.0.0"
     resolve-cwd "^2.0.0"
 
 in-publish@^2.0.0:
@@ -2402,11 +2439,12 @@ ini@~1.3.0:
   version "1.3.5"
   resolved "https://registry.yarnpkg.com/ini/-/ini-1.3.5.tgz#eee25f56db1c9ec6085e0c22778083f596abf927"
 
-internal-ip@1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/internal-ip/-/internal-ip-1.2.0.tgz#ae9fbf93b984878785d50a8de1b356956058cf5c"
+internal-ip@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/internal-ip/-/internal-ip-3.0.1.tgz#df5c99876e1d2eb2ea2d74f520e3f669a00ece27"
   dependencies:
-    meow "^3.3.0"
+    default-gateway "^2.6.0"
+    ipaddr.js "^1.5.2"
 
 interpret@^1.0.0:
   version "1.2.0"
@@ -2422,6 +2460,14 @@ invert-kv@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-1.0.0.tgz#104a8e4aaca6d3d8cd157a8ef8bfab2d7a3ffdb6"
 
+invert-kv@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-2.0.0.tgz#7393f5afa59ec9ff5f67a27620d11c226e3eec02"
+
+ip-regex@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/ip-regex/-/ip-regex-2.1.0.tgz#fa78bf5d2e6913c911ce9f819ee5146bb6d844e9"
+
 ip@^1.1.0, ip@^1.1.5:
   version "1.1.5"
   resolved "https://registry.yarnpkg.com/ip/-/ip-1.1.5.tgz#bdded70114290828c0a039e72ef25f5aaec4354a"
@@ -2430,6 +2476,10 @@ ipaddr.js@1.9.0:
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/ipaddr.js/-/ipaddr.js-1.9.0.tgz#37df74e430a0e47550fe54a2defe30d8acd95f65"
 
+ipaddr.js@^1.5.2:
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/ipaddr.js/-/ipaddr.js-1.9.1.tgz#bff38543eeb8984825079ff3a2a8e6cbd46781b3"
+
 is-absolute-url@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/is-absolute-url/-/is-absolute-url-2.1.0.tgz#50530dfb84fcc9aa7dbe7852e83a37b93b9f2aa6"
@@ -2464,10 +2514,6 @@ is-buffer@^1.1.5:
   version "1.1.6"
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
 
-is-callable@^1.1.4:
-  version "1.1.4"
-  resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.1.4.tgz#1e1adf219e1eeb684d691f9d6a05ff0d30a24d75"
-
 is-data-descriptor@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz#0b5ee648388e2c860282e793f1856fec3f301b56"
@@ -2594,12 +2640,6 @@ is-svg@^2.0.0:
   dependencies:
     html-comment-regex "^1.1.0"
 
-is-symbol@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.2.tgz#a055f6ae57192caee329e7a860118b497a950f38"
-  dependencies:
-    has-symbols "^1.0.0"
-
 is-typedarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
@@ -2749,6 +2789,12 @@ lcid@^1.0.0:
   dependencies:
     invert-kv "^1.0.0"
 
+lcid@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/lcid/-/lcid-2.0.0.tgz#6ef5d2df60e52f82eb228a4c373e8d1f397253cf"
+  dependencies:
+    invert-kv "^2.0.0"
+
 load-json-file@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/load-json-file/-/load-json-file-1.1.0.tgz#956905708d58b4bab4c2261b04f59f31c99374c0"
@@ -2787,6 +2833,13 @@ locate-path@^2.0.0:
     p-locate "^2.0.0"
     path-exists "^3.0.0"
 
+locate-path@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-3.0.0.tgz#dbec3b3ab759758071b58fe59fc41871af21400e"
+  dependencies:
+    p-locate "^3.0.0"
+    path-exists "^3.0.0"
+
 lodash.camelcase@^4.3.0:
   version "4.3.0"
   resolved "https://registry.yarnpkg.com/lodash.camelcase/-/lodash.camelcase-4.3.0.tgz#b28aa6288a2b9fc651035c7711f65ab6190331a6"
@@ -2799,7 +2852,7 @@ lodash.uniq@^4.5.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
 
-lodash@^4.0.0, lodash@^4.17.11, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.4, lodash@~4.17.10:
+lodash@^4.0.0, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.4, lodash@^4.17.5, lodash@~4.17.10:
   version "4.17.15"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
 
@@ -2837,6 +2890,12 @@ make-dir@^1.0.0:
   dependencies:
     pify "^3.0.0"
 
+map-age-cleaner@^0.1.1:
+  version "0.1.3"
+  resolved "https://registry.yarnpkg.com/map-age-cleaner/-/map-age-cleaner-0.1.3.tgz#7d583a7306434c055fe474b0f45078e6e1b4b92a"
+  dependencies:
+    p-defer "^1.0.0"
+
 map-cache@^0.2.2:
   version "0.2.2"
   resolved "https://registry.yarnpkg.com/map-cache/-/map-cache-0.2.2.tgz#c32abd0bd6525d9b051645bb4f26ac5dc98a0dbf"
@@ -2873,6 +2932,14 @@ mem@^1.1.0:
   dependencies:
     mimic-fn "^1.0.0"
 
+mem@^4.0.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/mem/-/mem-4.3.0.tgz#461af497bc4ae09608cdb2e60eefb69bff744178"
+  dependencies:
+    map-age-cleaner "^0.1.1"
+    mimic-fn "^2.0.0"
+    p-is-promise "^2.0.0"
+
 memory-fs@^0.4.0, memory-fs@~0.4.1:
   version "0.4.1"
   resolved "https://registry.yarnpkg.com/memory-fs/-/memory-fs-0.4.1.tgz#3a9a20b8462523e447cfbc7e8bb80ed667bfc552"
@@ -2880,7 +2947,7 @@ memory-fs@^0.4.0, memory-fs@~0.4.1:
     errno "^0.1.3"
     readable-stream "^2.0.1"
 
-meow@^3.3.0, meow@^3.7.0:
+meow@^3.7.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/meow/-/meow-3.7.0.tgz#72cb668b425228290abbfa856892587308a801fb"
   dependencies:
@@ -2903,7 +2970,7 @@ methods@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/methods/-/methods-1.1.2.tgz#5529a4d67654134edcc5266656835b0f851afcee"
 
-micromatch@^3.1.10, micromatch@^3.1.4:
+micromatch@^3.1.10, micromatch@^3.1.4, micromatch@^3.1.9:
   version "3.1.10"
   resolved "https://registry.yarnpkg.com/micromatch/-/micromatch-3.1.10.tgz#70859bc95c9840952f359a068a3fc49f9ecfac23"
   dependencies:
@@ -2942,14 +3009,22 @@ mime-types@^2.1.12, mime-types@~2.1.17, mime-types@~2.1.19, mime-types@~2.1.24:
   dependencies:
     mime-db "1.40.0"
 
-mime@1.6.0, mime@^1.5.0:
+mime@1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
 
+mime@^2.3.1:
+  version "2.4.4"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-2.4.4.tgz#bd7b91135fc6b01cde3e9bae33d659b63d8857e5"
+
 mimic-fn@^1.0.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.2.0.tgz#820c86a39334640e99516928bd03fca88057d022"
 
+mimic-fn@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
+
 minimalistic-assert@^1.0.0, minimalistic-assert@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz#2e194de044626d4a10e7f7fbc00ce73e83e4d5c7"
@@ -3252,10 +3327,6 @@ object-copy@^0.1.0:
     define-property "^0.2.5"
     kind-of "^3.0.3"
 
-object-inspect@^1.6.0:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.6.0.tgz#c70b6cbf72f274aab4c34c0c82f5167bf82cf15b"
-
 object-is@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/object-is/-/object-is-1.0.1.tgz#0aa60ec9989a0b3ed795cf4d06f62cf1ad6539b6"
@@ -3290,7 +3361,7 @@ on-headers@~1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/on-headers/-/on-headers-1.0.2.tgz#772b0ae6aaa525c399e489adfad90c403eb3c28f"
 
-once@^1.3.0:
+once@^1.3.0, once@^1.3.1, once@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
   dependencies:
@@ -3302,7 +3373,7 @@ opn@^5.1.0:
   dependencies:
     is-wsl "^1.1.0"
 
-original@>=0.0.5:
+original@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/original/-/original-1.0.2.tgz#e442a61cffe1c5fd20a65f3261c26663b303f25f"
   dependencies:
@@ -3330,6 +3401,14 @@ os-locale@^2.0.0:
     lcid "^1.0.0"
     mem "^1.1.0"
 
+os-locale@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/os-locale/-/os-locale-3.1.0.tgz#a802a6ee17f24c10483ab9935719cef4ed16bf1a"
+  dependencies:
+    execa "^1.0.0"
+    lcid "^2.0.0"
+    mem "^4.0.0"
+
 os-tmpdir@^1.0.0, os-tmpdir@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
@@ -3341,22 +3420,42 @@ osenv@0, osenv@^0.1.4:
     os-homedir "^1.0.0"
     os-tmpdir "^1.0.0"
 
+p-defer@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/p-defer/-/p-defer-1.0.0.tgz#9f6eb182f6c9aa8cd743004a7d4f96b196b0fb0c"
+
 p-finally@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-finally/-/p-finally-1.0.0.tgz#3fbcfb15b899a44123b34b6dcc18b724336a2cae"
 
+p-is-promise@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/p-is-promise/-/p-is-promise-2.1.0.tgz#918cebaea248a62cf7ffab8e3bca8c5f882fc42e"
+
 p-limit@^1.1.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-1.3.0.tgz#b86bd5f0c25690911c7590fcbfc2010d54b3ccb8"
   dependencies:
     p-try "^1.0.0"
 
+p-limit@^2.0.0:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.2.1.tgz#aa07a788cc3151c939b5131f63570f0dd2009537"
+  dependencies:
+    p-try "^2.0.0"
+
 p-locate@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-2.0.0.tgz#20a0103b222a70c8fd39cc2e580680f3dde5ec43"
   dependencies:
     p-limit "^1.1.0"
 
+p-locate@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-3.0.0.tgz#322d69a05c0264b25997d9f40cd8a891ab0064a4"
+  dependencies:
+    p-limit "^2.0.0"
+
 p-map@^1.1.1:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/p-map/-/p-map-1.2.0.tgz#e4e94f311eabbc8633a1e79908165fca26241b6b"
@@ -3365,6 +3464,10 @@ p-try@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-try/-/p-try-1.0.0.tgz#cbc79cdbaf8fd4228e13f621f2b1a237c1b207b3"
 
+p-try@^2.0.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.2.0.tgz#cb2868540e313d61de58fafbe35ce9004d5540e6"
+
 pako@~1.0.5:
   version "1.0.10"
   resolved "https://registry.yarnpkg.com/pako/-/pako-1.0.10.tgz#4328badb5086a426aa90f541977d4955da5c9732"
@@ -3488,6 +3591,12 @@ pkg-dir@^2.0.0:
   dependencies:
     find-up "^2.1.0"
 
+pkg-dir@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/pkg-dir/-/pkg-dir-3.0.0.tgz#2749020f239ed990881b1f71210d51eb6523bea3"
+  dependencies:
+    find-up "^3.0.0"
+
 portfinder@^1.0.9:
   version "1.0.25"
   resolved "https://registry.yarnpkg.com/portfinder/-/portfinder-1.0.25.tgz#254fd337ffba869f4b9d37edc298059cb4d35eca"
@@ -3837,6 +3946,13 @@ public-encrypt@^4.0.0:
     randombytes "^2.0.1"
     safe-buffer "^5.1.2"
 
+pump@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/pump/-/pump-3.0.0.tgz#b4a2116815bde2f4e1ea602354e8c75565107a64"
+  dependencies:
+    end-of-stream "^1.1.0"
+    once "^1.3.1"
+
 punycode@1.3.2:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.3.2.tgz#9653a036fb7c1ee42342f2325cceefea3926c48d"
@@ -4199,6 +4315,14 @@ schema-utils@^0.4.5:
     ajv "^6.1.0"
     ajv-keywords "^3.1.0"
 
+schema-utils@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-1.0.0.tgz#0b79a93204d7b600d4b2850d1f66c2a34951c770"
+  dependencies:
+    ajv "^6.1.0"
+    ajv-errors "^1.0.0"
+    ajv-keywords "^3.1.0"
+
 scss-tokenizer@^0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/scss-tokenizer/-/scss-tokenizer-0.2.3.tgz#8eb06db9a9723333824d3f5530641149847ce5d1"
@@ -4216,7 +4340,7 @@ selfsigned@^1.9.1:
   dependencies:
     node-forge "0.9.0"
 
-"semver@2 || 3 || 4 || 5", semver@^5.3.0, semver@^5.5.0:
+"semver@2 || 3 || 4 || 5", semver@^5.3.0, semver@^5.5.0, semver@^5.6.0:
   version "5.7.1"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.1.tgz#a954f931aeba508d307bbf069eff0c01c96116f7"
 
@@ -4246,7 +4370,7 @@ send@0.17.1:
     range-parser "~1.2.1"
     statuses "~1.5.0"
 
-serve-index@^1.9.1:
+serve-index@^1.7.2:
   version "1.9.1"
   resolved "https://registry.yarnpkg.com/serve-index/-/serve-index-1.9.1.tgz#d3768d69b1e7d82e5ce050fff5b453bea12a9239"
   dependencies:
@@ -4350,16 +4474,16 @@ snapdragon@^0.8.1:
     source-map-resolve "^0.5.0"
     use "^3.1.0"
 
-sockjs-client@1.1.5:
-  version "1.1.5"
-  resolved "https://registry.yarnpkg.com/sockjs-client/-/sockjs-client-1.1.5.tgz#1bb7c0f7222c40f42adf14f4442cbd1269771a83"
+sockjs-client@1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/sockjs-client/-/sockjs-client-1.3.0.tgz#12fc9d6cb663da5739d3dc5fb6e8687da95cb177"
   dependencies:
-    debug "^2.6.6"
-    eventsource "0.1.6"
-    faye-websocket "~0.11.0"
-    inherits "^2.0.1"
+    debug "^3.2.5"
+    eventsource "^1.0.7"
+    faye-websocket "~0.11.1"
+    inherits "^2.0.3"
     json3 "^3.3.2"
-    url-parse "^1.1.8"
+    url-parse "^1.4.3"
 
 sockjs@0.3.19:
   version "0.3.19"
@@ -4525,27 +4649,13 @@ string-width@^1.0.1, string-width@^1.0.2:
     is-fullwidth-code-point "^1.0.0"
     strip-ansi "^3.0.0"
 
-"string-width@^1.0.2 || 2", string-width@^2.0.0:
+"string-width@^1.0.2 || 2", string-width@^2.0.0, string-width@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.1.1.tgz#ab93f27a8dc13d28cac815c462143a6d9012ae9e"
   dependencies:
     is-fullwidth-code-point "^2.0.0"
     strip-ansi "^4.0.0"
 
-string.prototype.trimleft@^2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/string.prototype.trimleft/-/string.prototype.trimleft-2.1.0.tgz#6cc47f0d7eb8d62b0f3701611715a3954591d634"
-  dependencies:
-    define-properties "^1.1.3"
-    function-bind "^1.1.1"
-
-string.prototype.trimright@^2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/string.prototype.trimright/-/string.prototype.trimright-2.1.0.tgz#669d164be9df9b6f7559fa8e89945b168a5a6c58"
-  dependencies:
-    define-properties "^1.1.3"
-    function-bind "^1.1.1"
-
 string_decoder@^1.0.0, string_decoder@^1.1.1:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.3.0.tgz#42f114594a46cf1a8e30b0a84f56c78c3edac21e"
@@ -4662,10 +4772,6 @@ thunky@^1.0.2:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/thunky/-/thunky-1.1.0.tgz#5abaf714a9405db0504732bbccd2cedd9ef9537d"
 
-time-stamp@^2.0.0:
-  version "2.2.0"
-  resolved "https://registry.yarnpkg.com/time-stamp/-/time-stamp-2.2.0.tgz#917e0a66905688790ec7bbbde04046259af83f57"
-
 timers-browserify@^2.0.4:
   version "2.0.11"
   resolved "https://registry.yarnpkg.com/timers-browserify/-/timers-browserify-2.0.11.tgz#800b1f3eee272e5bc53ee465a04d0e804c31211f"
@@ -4819,7 +4925,7 @@ urix@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/urix/-/urix-0.1.0.tgz#da937f7a62e21fec1fd18d49b35c2935067a6c72"
 
-url-parse@^1.1.8, url-parse@^1.4.3:
+url-parse@^1.4.3:
   version "1.4.7"
   resolved "https://registry.yarnpkg.com/url-parse/-/url-parse-1.4.7.tgz#a8a83535e8c00a316e403a5db4ac1b9b853ae278"
   dependencies:
@@ -4953,47 +5059,56 @@ wbuf@^1.1.0, wbuf@^1.7.3:
   dependencies:
     minimalistic-assert "^1.0.0"
 
-webpack-dev-middleware@1.12.2:
-  version "1.12.2"
-  resolved "https://registry.yarnpkg.com/webpack-dev-middleware/-/webpack-dev-middleware-1.12.2.tgz#f8fc1120ce3b4fc5680ceecb43d777966b21105e"
+webpack-dev-middleware@3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/webpack-dev-middleware/-/webpack-dev-middleware-3.4.0.tgz#1132fecc9026fd90f0ecedac5cbff75d1fb45890"
   dependencies:
     memory-fs "~0.4.1"
-    mime "^1.5.0"
-    path-is-absolute "^1.0.0"
+    mime "^2.3.1"
     range-parser "^1.0.3"
-    time-stamp "^2.0.0"
+    webpack-log "^2.0.0"
 
-webpack-dev-server@^2.9.1:
-  version "2.11.5"
-  resolved "https://registry.yarnpkg.com/webpack-dev-server/-/webpack-dev-server-2.11.5.tgz#416fbdea0e04eebe44a626e791d5a2eb37fe8c48"
+webpack-dev-server@^3.1.11:
+  version "3.1.11"
+  resolved "https://registry.yarnpkg.com/webpack-dev-server/-/webpack-dev-server-3.1.11.tgz#3b698b5b32476f1f0d3d4014952fcf42ab118205"
   dependencies:
     ansi-html "0.0.7"
-    array-includes "^3.0.3"
     bonjour "^3.5.0"
-    chokidar "^2.1.2"
-    compression "^1.7.3"
+    chokidar "^2.0.0"
+    compression "^1.5.2"
     connect-history-api-fallback "^1.3.0"
     debug "^3.1.0"
     del "^3.0.0"
     express "^4.16.2"
     html-entities "^1.2.0"
-    http-proxy-middleware "^0.19.1"
-    import-local "^1.0.0"
-    internal-ip "1.2.0"
+    http-proxy-middleware "~0.18.0"
+    import-local "^2.0.0"
+    internal-ip "^3.0.1"
     ip "^1.1.5"
     killable "^1.0.0"
     loglevel "^1.4.1"
     opn "^5.1.0"
     portfinder "^1.0.9"
+    schema-utils "^1.0.0"
     selfsigned "^1.9.1"
-    serve-index "^1.9.1"
+    semver "^5.6.0"
+    serve-index "^1.7.2"
     sockjs "0.3.19"
-    sockjs-client "1.1.5"
+    sockjs-client "1.3.0"
     spdy "^4.0.0"
     strip-ansi "^3.0.0"
     supports-color "^5.1.0"
-    webpack-dev-middleware "1.12.2"
-    yargs "6.6.0"
+    url "^0.11.0"
+    webpack-dev-middleware "3.4.0"
+    webpack-log "^2.0.0"
+    yargs "12.0.2"
+
+webpack-log@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/webpack-log/-/webpack-log-2.0.0.tgz#5b7928e0637593f119d32f6227c1e0ac31e1b47f"
+  dependencies:
+    ansi-colors "^3.0.0"
+    uuid "^3.3.2"
 
 webpack-sources@^1.0.1:
   version "1.4.3"
@@ -5084,6 +5199,10 @@ wrappy@1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
 
+xregexp@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/xregexp/-/xregexp-4.0.0.tgz#e698189de49dd2a18cc5687b05e17c8e43943020"
+
 xtend@^4.0.0:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz#bb72779f5fa465186b1f438f674fa347fdb5db54"
@@ -5092,6 +5211,10 @@ y18n@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
 
+"y18n@^3.2.1 || ^4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.0.tgz#95ef94f85ecc81d007c264e190a120f0a3c8566b"
+
 yallist@^2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-2.1.2.tgz#1c11f9218f076089a47dd512f93c6699a6a81d52"
@@ -5100,11 +5223,11 @@ yallist@^3.0.0, yallist@^3.0.3:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.1.1.tgz#dbb7daf9bfd8bac9ab45ebf602b8cbad0d5d08fd"
 
-yargs-parser@^4.2.0:
-  version "4.2.1"
-  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-4.2.1.tgz#29cceac0dc4f03c6c87b4a9f217dd18c9f74871c"
+yargs-parser@^10.1.0:
+  version "10.1.0"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-10.1.0.tgz#7202265b89f7e9e9f2e5765e0fe735a905edbaa8"
   dependencies:
-    camelcase "^3.0.0"
+    camelcase "^4.1.0"
 
 yargs-parser@^5.0.0:
   version "5.0.0"
@@ -5118,23 +5241,22 @@ yargs-parser@^7.0.0:
   dependencies:
     camelcase "^4.1.0"
 
-yargs@6.6.0:
-  version "6.6.0"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-6.6.0.tgz#782ec21ef403345f830a808ca3d513af56065208"
+yargs@12.0.2:
+  version "12.0.2"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-12.0.2.tgz#fe58234369392af33ecbef53819171eff0f5aadc"
   dependencies:
-    camelcase "^3.0.0"
-    cliui "^3.2.0"
-    decamelize "^1.1.1"
+    cliui "^4.0.0"
+    decamelize "^2.0.0"
+    find-up "^3.0.0"
     get-caller-file "^1.0.1"
-    os-locale "^1.4.0"
-    read-pkg-up "^1.0.1"
+    os-locale "^3.0.0"
     require-directory "^2.1.1"
     require-main-filename "^1.0.1"
     set-blocking "^2.0.0"
-    string-width "^1.0.2"
-    which-module "^1.0.0"
-    y18n "^3.2.1"
-    yargs-parser "^4.2.0"
+    string-width "^2.0.0"
+    which-module "^2.0.0"
+    y18n "^3.2.1 || ^4.0.0"
+    yargs-parser "^10.1.0"
 
 yargs@^7.0.0:
   version "7.1.0"