diff --git a/package-lock.json b/package-lock.json
index 5155f3a..7149d62 100644
--- a/package-lock.json
+++ b/package-lock.json
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+            "end-of-stream": "^1.1.0",
+            "once": "^1.3.1"
           }
         },
         "readdirp": {
@@ -19445,24 +19249,36 @@
             "readable-stream": "^2.0.2"
           }
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-        "string-width": {
-          "version": "1.0.2",
-          "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
-          "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+        "schema-utils": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-1.0.0.tgz",
+          "integrity": "sha512-i27Mic4KovM/lnGsy8whRCHhc7VicJajAjTrYg11K9zfZXnYIt4k5F+kZkwjnrhKzLic/HLU4j11mjsz2G/75g==",
           "dev": true,
           "requires": {
-            "code-point-at": "^1.0.0",
-            "is-fullwidth-code-point": "^1.0.0",
-            "strip-ansi": "^3.0.0"
+            "ajv": "^6.1.0",
+            "ajv-errors": "^1.0.0",
+            "ajv-keywords": "^3.1.0"
           }
         },
-        "strip-bom": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-2.0.0.tgz",
-          "integrity": "sha1-YhmoVhZSBJHzV4i9vxRHqZx+aw4=",
+        "string-width": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
+          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
           "dev": true,
           "requires": {
-            "is-utf8": "^0.2.0"
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^4.0.0"
+          },
+          "dependencies": {
+            "strip-ansi": {
+              "version": "4.0.0",
+              "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+              "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+              "dev": true,
+              "requires": {
+                "ansi-regex": "^3.0.0"
+              }
+            }
           }
         },
         "to-regex-range": {
@@ -19476,23 +19292,26 @@
           }
         },
         "webpack-dev-middleware": {
-          "version": "1.12.2",
-          "resolved": "https://registry.npmjs.org/webpack-dev-middleware/-/webpack-dev-middleware-1.12.2.tgz",
-          "integrity": "sha512-FCrqPy1yy/sN6U/SaEZcHKRXGlqU0DUaEBL45jkUYoB8foVb6wCnbIJ1HKIx+qUFTW+3JpVcCJCxZ8VATL4e+A==",
+          "version": "3.4.0",
+          "resolved": "https://registry.npmjs.org/webpack-dev-middleware/-/webpack-dev-middleware-3.4.0.tgz",
+          "integrity": "sha512-Q9Iyc0X9dP9bAsYskAVJ/hmIZZQwf/3Sy4xCAZgL5cUkjZmUZLt4l5HpbST/Pdgjn3u6pE7u5OdGd1apgzRujA==",
           "dev": true,
           "requires": {
             "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"
           }
         },
-        "which-module": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/which-module/-/which-module-1.0.0.tgz",
-          "integrity": "sha1-u6Y8qGGUiZT/MHc2CJ47lgJsKk8=",
-          "dev": true
+        "webpack-log": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/webpack-log/-/webpack-log-2.0.0.tgz",
+          "integrity": "sha512-cX8G2vR/85UYG59FgkoMamwHUIkSSlV3bBMRsbxVXVUk2j6NleCKjQ/WE9eYg9WY4w25O9w8wKP4rzNZFmUcUg==",
+          "dev": true,
+          "requires": {
+            "ansi-colors": "^3.0.0",
+            "uuid": "^3.3.2"
+          }
         },
         "wrap-ansi": {
           "version": "2.1.0",
@@ -19502,42 +19321,48 @@
           "requires": {
             "string-width": "^1.0.1",
             "strip-ansi": "^3.0.1"
+          },
+          "dependencies": {
+            "is-fullwidth-code-point": {
+              "version": "1.0.0",
+              "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
+              "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
+              "dev": true,
+              "requires": {
+                "number-is-nan": "^1.0.0"
+              }
+            },
+            "string-width": {
+              "version": "1.0.2",
+              "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+              "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+              "dev": true,
+              "requires": {
+                "code-point-at": "^1.0.0",
+                "is-fullwidth-code-point": "^1.0.0",
+                "strip-ansi": "^3.0.0"
+              }
+            }
           }
         },
-        "y18n": {
-          "version": "3.2.1",
-          "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
-          "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE=",
-          "dev": true
-        },
         "yargs": {
-          "version": "6.6.0",
-          "resolved": "https://registry.npmjs.org/yargs/-/yargs-6.6.0.tgz",
-          "integrity": "sha1-eC7CHvQDNF+DCoCMo9UTr1YGUgg=",
+          "version": "12.0.2",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.2.tgz",
+          "integrity": "sha512-e7SkEx6N6SIZ5c5H22RTZae61qtn3PYUE8JYbBFlK9sYmh3DMQ6E5ygtaG/2BW0JZi4WGgTR2IV5ChqlqrDGVQ==",
           "dev": true,
           "requires": {
-            "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"
-          }
-        },
-        "yargs-parser": {
-          "version": "4.2.1",
-          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-4.2.1.tgz",
-          "integrity": "sha1-KczqwNxPA8bIe0qfIX3RjJ90hxw=",
-          "dev": true,
-          "requires": {
-            "camelcase": "^3.0.0"
+            "string-width": "^2.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^3.2.1 || ^4.0.0",
+            "yargs-parser": "^10.1.0"
           }
         }
       }
@@ -19893,6 +19718,12 @@
       "integrity": "sha1-wodrBhaKrcQOV9l+gRkayPQ5iz4=",
       "dev": true
     },
+    "xregexp": {
+      "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 800b970..80bbe10 100644
--- a/package.json
+++ b/package.json
@@ -147,7 +147,7 @@
     "webpack": "^3.3.0",
     "webpack-bundle-analyzer": "^2.13.1",
     "webpack-dev-middleware": "^2.0.6",
-    "webpack-dev-server": "^2.4.5",
+    "webpack-dev-server": "^3.1.11",
     "webpack-distsize": "^0.1.0",
     "webpack-merge": "^4.1.4"
   }