diff --git a/.babelrc b/.babelrc
index c13c5f6..0339d5d 100644
--- a/.babelrc
+++ b/.babelrc
@@ -1,3 +1,3 @@
 {
-  "presets": ["es2015"]
+    "presets": ["env"]
 }
diff --git a/package-lock.json b/package-lock.json
index 26db368..380ca84 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,15 @@
     "lockfileVersion": 1,
     "requires": true,
     "dependencies": {
+        "ansi-colors": {
+            "version": "1.1.0",
+            "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-1.1.0.tgz",
+            "integrity": "sha512-SFKX67auSNoVR38N3L+nvsPjOE0bybKTYbkf5tRvushrAPQ9V75huw0ZxBkKVeRU9kqH3d6HA4xTckbwZ4ixmA==",
+            "dev": true,
+            "requires": {
+                "ansi-wrap": "^0.1.0"
+            }
+        },
         "ansi-regex": {
             "version": "2.1.1",
             "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
@@ -16,16 +25,28 @@
             "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
             "dev": true
         },
-        "array-differ": {
-            "version": "1.0.0",
-            "resolved": "https://registry.npmjs.org/array-differ/-/array-differ-1.0.0.tgz",
-            "integrity": "sha1-7/UuN1gknTO+QCuLuOVkuytdQDE=",
+        "ansi-wrap": {
+            "version": "0.1.0",
+            "resolved": "https://registry.npmjs.org/ansi-wrap/-/ansi-wrap-0.1.0.tgz",
+            "integrity": "sha1-qCJQ3bABXponyoLoLqYDu/pF768=",
             "dev": true
         },
-        "array-uniq": {
-            "version": "1.0.3",
-            "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.3.tgz",
-            "integrity": "sha1-r2rId6Jcx/dOBYiUdThY39sk/bY=",
+        "arr-diff": {
+            "version": "4.0.0",
+            "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-4.0.0.tgz",
+            "integrity": "sha1-1kYQdP6/7HHn4VI1dhoyml3HxSA=",
+            "dev": true
+        },
+        "arr-union": {
+            "version": "3.1.0",
+            "resolved": "https://registry.npmjs.org/arr-union/-/arr-union-3.1.0.tgz",
+            "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ=",
+            "dev": true
+        },
+        "assign-symbols": {
+            "version": "1.0.0",
+            "resolved": "https://registry.npmjs.org/assign-symbols/-/assign-symbols-1.0.0.tgz",
+            "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c=",
             "dev": true
         },
         "babel-code-frame": {
@@ -34,52 +55,52 @@
             "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
             "dev": true,
             "requires": {
-                "chalk": "1.1.3",
-                "esutils": "2.0.2",
-                "js-tokens": "3.0.2"
+                "chalk": "^1.1.3",
+                "esutils": "^2.0.2",
+                "js-tokens": "^3.0.2"
             }
         },
         "babel-core": {
-            "version": "6.26.0",
-            "resolved": "https://registry.npmjs.org/babel-core/-/babel-core-6.26.0.tgz",
-            "integrity": "sha1-rzL3izGm/O8RnIew/Y2XU/A6C7g=",
-            "dev": true,
-            "requires": {
-                "babel-code-frame": "6.26.0",
-                "babel-generator": "6.26.0",
-                "babel-helpers": "6.24.1",
-                "babel-messages": "6.23.0",
-                "babel-register": "6.26.0",
-                "babel-runtime": "6.26.0",
-                "babel-template": "6.26.0",
-                "babel-traverse": "6.26.0",
-                "babel-types": "6.26.0",
-                "babylon": "6.18.0",
-                "convert-source-map": "1.5.0",
-                "debug": "2.6.8",
-                "json5": "0.5.1",
-                "lodash": "4.17.4",
-                "minimatch": "3.0.4",
-                "path-is-absolute": "1.0.1",
-                "private": "0.1.7",
-                "slash": "1.0.0",
-                "source-map": "0.5.7"
+            "version": "6.26.3",
+            "resolved": "https://registry.npmjs.org/babel-core/-/babel-core-6.26.3.tgz",
+            "integrity": "sha512-6jyFLuDmeidKmUEb3NM+/yawG0M2bDZ9Z1qbZP59cyHLz8kYGKYwpJP0UwUKKUiTRNvxfLesJnTedqczP7cTDA==",
+            "dev": true,
+            "requires": {
+                "babel-code-frame": "^6.26.0",
+                "babel-generator": "^6.26.0",
+                "babel-helpers": "^6.24.1",
+                "babel-messages": "^6.23.0",
+                "babel-register": "^6.26.0",
+                "babel-runtime": "^6.26.0",
+                "babel-template": "^6.26.0",
+                "babel-traverse": "^6.26.0",
+                "babel-types": "^6.26.0",
+                "babylon": "^6.18.0",
+                "convert-source-map": "^1.5.1",
+                "debug": "^2.6.9",
+                "json5": "^0.5.1",
+                "lodash": "^4.17.4",
+                "minimatch": "^3.0.4",
+                "path-is-absolute": "^1.0.1",
+                "private": "^0.1.8",
+                "slash": "^1.0.0",
+                "source-map": "^0.5.7"
             }
         },
         "babel-generator": {
-            "version": "6.26.0",
-            "resolved": "https://registry.npmjs.org/babel-generator/-/babel-generator-6.26.0.tgz",
-            "integrity": "sha1-rBriAHC3n248odMmlhMFN3TyDcU=",
+            "version": "6.26.1",
+            "resolved": "https://registry.npmjs.org/babel-generator/-/babel-generator-6.26.1.tgz",
+            "integrity": "sha512-HyfwY6ApZj7BYTcJURpM5tznulaBvyio7/0d4zFOeMPUmfxkCjHocCuoLa2SAGzBI8AREcH3eP3758F672DppA==",
             "dev": true,
             "requires": {
-                "babel-messages": "6.23.0",
-                "babel-runtime": "6.26.0",
-                "babel-types": "6.26.0",
-                "detect-indent": "4.0.0",
-                "jsesc": "1.3.0",
-                "lodash": "4.17.4",
-                "source-map": "0.5.7",
-                "trim-right": "1.0.1"
+                "babel-messages": "^6.23.0",
+                "babel-runtime": "^6.26.0",
+                "babel-types": "^6.26.0",
+                "detect-indent": "^4.0.0",
+                "jsesc": "^1.3.0",
+                "lodash": "^4.17.4",
+                "source-map": "^0.5.7",
+                "trim-right": "^1.0.1"
             }
         },
         "babel-helper-builder-binary-assignment-operator-visitor": {
@@ -88,9 +109,9 @@
             "integrity": "sha1-zORReto1b0IgvK6KAsKzRvmlZmQ=",
             "dev": true,
             "requires": {
-                "babel-helper-explode-assignable-expression": "6.24.1",
-                "babel-runtime": "6.26.0",
-                "babel-types": "6.26.0"
+                "babel-helper-explode-assignable-expression": "^6.24.1",
+                "babel-runtime": "^6.22.0",
+                "babel-types": "^6.24.1"
             }
         },
         "babel-helper-call-delegate": {
@@ -99,10 +120,10 @@
             "integrity": "sha1-7Oaqzdx25Bw0YfiL/Fdb0Nqi340=",
             "dev": true,
             "requires": {
-                "babel-helper-hoist-variables": "6.24.1",
-                "babel-runtime": "6.26.0",
-                "babel-traverse": "6.26.0",
-                "babel-types": "6.26.0"
+                "babel-helper-hoist-variables": "^6.24.1",
+                "babel-runtime": "^6.22.0",
+                "babel-traverse": "^6.24.1",
+                "babel-types": "^6.24.1"
             }
         },
         "babel-helper-define-map": {
@@ -111,10 +132,10 @@
             "integrity": "sha1-pfVtq0GiX5fstJjH66ypgZ+Vvl8=",
             "dev": true,
             "requires": {
-                "babel-helper-function-name": "6.24.1",
-                "babel-runtime": "6.26.0",
-                "babel-types": "6.26.0",
-                "lodash": "4.17.4"
+                "babel-helper-function-name": "^6.24.1",
+                "babel-runtime": "^6.26.0",
+                "babel-types": "^6.26.0",
+                "lodash": "^4.17.4"
             }
         },
         "babel-helper-explode-assignable-expression": {
@@ -123,9 +144,9 @@
             "integrity": "sha1-8luCz33BBDPFX3BZLVdGQArCLKo=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0",
-                "babel-traverse": "6.26.0",
-                "babel-types": "6.26.0"
+                "babel-runtime": "^6.22.0",
+                "babel-traverse": "^6.24.1",
+                "babel-types": "^6.24.1"
             }
         },
         "babel-helper-function-name": {
@@ -134,11 +155,11 @@
             "integrity": "sha1-00dbjAPtmCQqJbSDUasYOZ01gKk=",
             "dev": true,
             "requires": {
-                "babel-helper-get-function-arity": "6.24.1",
-                "babel-runtime": "6.26.0",
-                "babel-template": "6.26.0",
-                "babel-traverse": "6.26.0",
-                "babel-types": "6.26.0"
+                "babel-helper-get-function-arity": "^6.24.1",
+                "babel-runtime": "^6.22.0",
+                "babel-template": "^6.24.1",
+                "babel-traverse": "^6.24.1",
+                "babel-types": "^6.24.1"
             }
         },
         "babel-helper-get-function-arity": {
@@ -147,8 +168,8 @@
             "integrity": "sha1-j3eCqpNAfEHTqlCQj4mwMbG2hT0=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0",
-                "babel-types": "6.26.0"
+                "babel-runtime": "^6.22.0",
+                "babel-types": "^6.24.1"
             }
         },
         "babel-helper-hoist-variables": {
@@ -157,8 +178,8 @@
             "integrity": "sha1-HssnaJydJVE+rbyZFKc/VAi+enY=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0",
-                "babel-types": "6.26.0"
+                "babel-runtime": "^6.22.0",
+                "babel-types": "^6.24.1"
             }
         },
         "babel-helper-optimise-call-expression": {
@@ -167,8 +188,8 @@
             "integrity": "sha1-96E0J7qfc/j0+pk8VKl4gtEkQlc=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0",
-                "babel-types": "6.26.0"
+                "babel-runtime": "^6.22.0",
+                "babel-types": "^6.24.1"
             }
         },
         "babel-helper-regex": {
@@ -177,9 +198,9 @@
             "integrity": "sha1-MlxZ+QL4LyS3T6zu0DY5VPZJXnI=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0",
-                "babel-types": "6.26.0",
-                "lodash": "4.17.4"
+                "babel-runtime": "^6.26.0",
+                "babel-types": "^6.26.0",
+                "lodash": "^4.17.4"
             }
         },
         "babel-helper-remap-async-to-generator": {
@@ -188,11 +209,11 @@
             "integrity": "sha1-XsWBgnrXI/7N04HxySg5BnbkVRs=",
             "dev": true,
             "requires": {
-                "babel-helper-function-name": "6.24.1",
-                "babel-runtime": "6.26.0",
-                "babel-template": "6.26.0",
-                "babel-traverse": "6.26.0",
-                "babel-types": "6.26.0"
+                "babel-helper-function-name": "^6.24.1",
+                "babel-runtime": "^6.22.0",
+                "babel-template": "^6.24.1",
+                "babel-traverse": "^6.24.1",
+                "babel-types": "^6.24.1"
             }
         },
         "babel-helper-replace-supers": {
@@ -201,12 +222,12 @@
             "integrity": "sha1-v22/5Dk40XNpohPKiov3S2qQqxo=",
             "dev": true,
             "requires": {
-                "babel-helper-optimise-call-expression": "6.24.1",
-                "babel-messages": "6.23.0",
-                "babel-runtime": "6.26.0",
-                "babel-template": "6.26.0",
-                "babel-traverse": "6.26.0",
-                "babel-types": "6.26.0"
+                "babel-helper-optimise-call-expression": "^6.24.1",
+                "babel-messages": "^6.23.0",
+                "babel-runtime": "^6.22.0",
+                "babel-template": "^6.24.1",
+                "babel-traverse": "^6.24.1",
+                "babel-types": "^6.24.1"
             }
         },
         "babel-helpers": {
@@ -215,8 +236,8 @@
             "integrity": "sha1-NHHenK7DiOXIUOWX5Yom3fN2ArI=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0",
-                "babel-template": "6.26.0"
+                "babel-runtime": "^6.22.0",
+                "babel-template": "^6.24.1"
             }
         },
         "babel-messages": {
@@ -225,7 +246,7 @@
             "integrity": "sha1-8830cDhYA1sqKVHG7F7fbGLyYw4=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0"
+                "babel-runtime": "^6.22.0"
             }
         },
         "babel-plugin-check-es2015-constants": {
@@ -234,7 +255,7 @@
             "integrity": "sha1-NRV7EBQm/S/9PaP3XH0ekYNbv4o=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0"
+                "babel-runtime": "^6.22.0"
             }
         },
         "babel-plugin-syntax-async-functions": {
@@ -261,9 +282,9 @@
             "integrity": "sha1-ZTbjeK/2yx1VF6wOQOs+n8jQh2E=",
             "dev": true,
             "requires": {
-                "babel-helper-remap-async-to-generator": "6.24.1",
-                "babel-plugin-syntax-async-functions": "6.13.0",
-                "babel-runtime": "6.26.0"
+                "babel-helper-remap-async-to-generator": "^6.24.1",
+                "babel-plugin-syntax-async-functions": "^6.8.0",
+                "babel-runtime": "^6.22.0"
             }
         },
         "babel-plugin-transform-es2015-arrow-functions": {
@@ -272,7 +293,7 @@
             "integrity": "sha1-RSaSy3EdX3ncf4XkQM5BufJE0iE=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0"
+                "babel-runtime": "^6.22.0"
             }
         },
         "babel-plugin-transform-es2015-block-scoped-functions": {
@@ -281,7 +302,7 @@
             "integrity": "sha1-u8UbSflk1wy42OC5ToICRs46YUE=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0"
+                "babel-runtime": "^6.22.0"
             }
         },
         "babel-plugin-transform-es2015-block-scoping": {
@@ -290,11 +311,11 @@
             "integrity": "sha1-1w9SmcEwjQXBL0Y4E7CgnnOxiV8=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0",
-                "babel-template": "6.26.0",
-                "babel-traverse": "6.26.0",
-                "babel-types": "6.26.0",
-                "lodash": "4.17.4"
+                "babel-runtime": "^6.26.0",
+                "babel-template": "^6.26.0",
+                "babel-traverse": "^6.26.0",
+                "babel-types": "^6.26.0",
+                "lodash": "^4.17.4"
             }
         },
         "babel-plugin-transform-es2015-classes": {
@@ -303,15 +324,15 @@
             "integrity": "sha1-WkxYpQyclGHlZLSyo7+ryXolhNs=",
             "dev": true,
             "requires": {
-                "babel-helper-define-map": "6.26.0",
-                "babel-helper-function-name": "6.24.1",
-                "babel-helper-optimise-call-expression": "6.24.1",
-                "babel-helper-replace-supers": "6.24.1",
-                "babel-messages": "6.23.0",
-                "babel-runtime": "6.26.0",
-                "babel-template": "6.26.0",
-                "babel-traverse": "6.26.0",
-                "babel-types": "6.26.0"
+                "babel-helper-define-map": "^6.24.1",
+                "babel-helper-function-name": "^6.24.1",
+                "babel-helper-optimise-call-expression": "^6.24.1",
+                "babel-helper-replace-supers": "^6.24.1",
+                "babel-messages": "^6.23.0",
+                "babel-runtime": "^6.22.0",
+                "babel-template": "^6.24.1",
+                "babel-traverse": "^6.24.1",
+                "babel-types": "^6.24.1"
             }
         },
         "babel-plugin-transform-es2015-computed-properties": {
@@ -320,8 +341,8 @@
             "integrity": "sha1-b+Ko0WiV1WNPTNmZttNICjCBWbM=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0",
-                "babel-template": "6.26.0"
+                "babel-runtime": "^6.22.0",
+                "babel-template": "^6.24.1"
             }
         },
         "babel-plugin-transform-es2015-destructuring": {
@@ -330,7 +351,7 @@
             "integrity": "sha1-mXux8auWf2gtKwh2/jWNYOdlxW0=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0"
+                "babel-runtime": "^6.22.0"
             }
         },
         "babel-plugin-transform-es2015-duplicate-keys": {
@@ -339,8 +360,8 @@
             "integrity": "sha1-c+s9MQypaePvnskcU3QabxV2Qj4=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0",
-                "babel-types": "6.26.0"
+                "babel-runtime": "^6.22.0",
+                "babel-types": "^6.24.1"
             }
         },
         "babel-plugin-transform-es2015-for-of": {
@@ -349,7 +370,7 @@
             "integrity": "sha1-9HyVsrYT3x0+zC/bdXNiPHUkhpE=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0"
+                "babel-runtime": "^6.22.0"
             }
         },
         "babel-plugin-transform-es2015-function-name": {
@@ -358,9 +379,9 @@
             "integrity": "sha1-g0yJhTvDaxrw86TF26qU/Y6sqos=",
             "dev": true,
             "requires": {
-                "babel-helper-function-name": "6.24.1",
-                "babel-runtime": "6.26.0",
-                "babel-types": "6.26.0"
+                "babel-helper-function-name": "^6.24.1",
+                "babel-runtime": "^6.22.0",
+                "babel-types": "^6.24.1"
             }
         },
         "babel-plugin-transform-es2015-literals": {
@@ -369,7 +390,7 @@
             "integrity": "sha1-T1SgLWzWbPkVKAAZox0xklN3yi4=",
             "dev": true,
             "requires": {
-                "babel-runtime": "6.26.0"
+                "babel-runtime": "^6.22.0"
             }
         },
         "babel-plugin-transform-es2015-modules-amd": {
@@ -378,21 +399,21 @@
             "integrity": "sha1-Oz5UAXI5hC1tGcMBHEvS8AoA0VQ=",
             "dev": true,
             "requires": {
-                "babel-plugin-transform-es2015-modules-commonjs": "6.26.0",
-                "babel-runtime": "6.26.0",
-                "babel-template": "6.26.0"
+                "babel-plugin-transform-es2015-modules-commonjs": "^6.24.1",
+                "babel-runtime": "^6.22.0",
+                "babel-template": "^6.24.1"
             }
         },
         "babel-plugin-transform-es2015-modules-commonjs": {
-            "version": "6.26.0",
-            "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-modules-commonjs/-/babel-plugin-transform-es2015-modules-commonjs-6.26.0.tgz",
-            "integrity": "sha1-DYOUApt9xqvhqX7xgeAHWN0uXYo=",
+            "version": "6.26.2",
+            "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-modules-commonjs/-/babel-plugin-transform-es2015-modules-commonjs-6.26.2.tgz",
+            "integrity": "sha512-CV9ROOHEdrjcwhIaJNBGMBCodN+1cfkwtM1SbUHmvyy35KGT7fohbpOxkE2uLz1o6odKK2Ck/tz47z+VqQfi9Q==",
             "dev": true,
             "requires": {
-                "babel-plugin-transform-strict-mode": "6.24.1",
-                "babel-runtime": "6.26.0",
-                "babel-template": "6.26.0",
-                "babel-types": "6.26.0"
+                "babel-plugin-transform-strict-mode": "^6.24.1",
+                "babel-runtime": "^6.26.0",
+                "babel-template": "^6.26.0",
+                "babel-types": "^6.26.0"
             }
         },
         "babel-plugin-transform-es2015-modules-systemjs": {
@@ -401,9 +422,9 @@
             "integrity": "sha1-/4mhQrkRmpBhlfXxBuzzBdlAfSM=",
             "dev": true,
             "requires": {
-                "babel-helper-hoist-variables": "6.24.1",
-                "babel-runtime": "6.26.0",
-                "babel-template": "6.26.0"
+                "babel-helper-hoist-variables": "^6.24.1",
+                "babel-runtime": "^6.22.0",
+                "babel-template": "^6.24.1"
             }
         },
         "babel-plugin-transform-es2015-modules-umd": {
@@ -412,9 +433,9 @@
             "integrity": "sha1-rJl+YoXNGO1hdq22B9YCNErThGg=",
             "dev": true,
             "requires": {
-                "babel-plugin-transform-es2015-modules-amd": "6.24.1",
-                "babel-runtime": "6.26.0",
-                "babel-template": "6.26.0"
+                "babel-plugin-transform-es2015-modules-amd": "^6.24.1",
+                "babel-runtime": "^6.22.0",
+                "babel-template": "^6.24.1"
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+            "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.0.tgz",
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@@ -1325,7 +1114,7 @@
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@@ -1340,48 +1129,10 @@
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+                "readable-stream": "^2.1.5",
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@@ -1400,24 +1151,13 @@
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             "dev": true,
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diff --git a/package.json b/package.json
index 7feba18..d6c952c 100644
--- a/package.json
+++ b/package.json
@@ -14,9 +14,8 @@
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-        "gulp-babel": "^6.1.2"
+        "gulp-babel": "^7.0.1",
+        "babel-core": "^6.26.3",
+        "babel-preset-env": "^1.6.1"
     }
 }