diff --git a/.gitignore b/.gitignore
index d6ce1bc..51e526c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,5 @@ lib/
 build/
 .idea/
 npm-debug*
-sauce_connect.log
\ No newline at end of file
+sauce_connect.log
+dist/
diff --git a/package-lock.json b/package-lock.json
index 4f2ee49..4f27a77 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,18 +5,18 @@
   "requires": true,
   "dependencies": {
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-      "version": "7.10.2",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-7.10.2.tgz",
-      "integrity": "sha512-RO4ig5taKmcrU4Rex8ojG1gpwFkjddzug9iPQSDvbewHN9vDpcFewevkaOK+KT+w1LeZnxbgOyfXwV4pxsQ4GQ==",
+      "version": "7.0.70",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-7.0.70.tgz",
+      "integrity": "sha512-bAcW/1aM8/s5iFKhRpu/YJiQf/b1ZwnMRqqsWRCmAqEDQF2zY8Ez3Iu9AcZKFKc3vCJc8KJVpJ6Pn54sJ1BvXQ==",
       "dev": true
     },
     "accepts": {
-      "version": "1.3.3",
-      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.3.tgz",
-      "integrity": "sha1-w8p0NJOGSMPg2cHjKN1otiLChMo=",
+      "version": "1.3.5",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz",
+      "integrity": "sha1-63d99gEXI6OxTopywIBcjoZ0a9I=",
       "dev": true,
       "requires": {
-        "mime-types": "2.1.21",
+        "mime-types": "~2.1.18",
         "negotiator": "0.6.1"
       }
     },
@@ -32,7 +32,7 @@
       "integrity": "sha1-x1K9IQvvZ5UBtsbLf8hPj0cVjMQ=",
       "dev": true,
       "requires": {
-        "acorn": "4.0.13"
+        "acorn": "^4.0.3"
       },
       "dependencies": {
         "acorn": {
@@ -55,13 +55,13 @@
       "integrity": "sha1-1t4Q1a9hMtW9aSQn1G/FOFOQlMc=",
       "dev": true,
       "requires": {
-        "extend": "3.0.2",
-        "semver": "5.0.3"
+        "extend": "~3.0.0",
+        "semver": "~5.0.1"
       },
       "dependencies": {
         "semver": {
           "version": "5.0.3",
-          "resolved": "http://registry.npmjs.org/semver/-/semver-5.0.3.tgz",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.0.3.tgz",
           "integrity": "sha1-d0Zt5YnNXTyV8TiqeLxWmjy10no=",
           "dev": true
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@@ -73,8 +73,8 @@
       "integrity": "sha1-gv+wKynmYq5TvcIK8VlHcGc5xTY=",
       "dev": true,
       "requires": {
-        "co": "4.6.0",
-        "json-stable-stringify": "1.0.1"
+        "co": "^4.6.0",
+        "json-stable-stringify": "^1.0.1"
       }
     },
     "ajv-keywords": {
@@ -89,9 +89,9 @@
       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
       "dev": true,
       "requires": {
-        "kind-of": "3.2.2",
-        "longest": "1.0.1",
-        "repeat-string": "1.6.1"
+        "kind-of": "^3.0.2",
+        "longest": "^1.0.1",
+        "repeat-string": "^1.5.2"
       }
     },
     "ansi-align": {
@@ -100,7 +100,7 @@
       "integrity": "sha1-w2rsy6VjuJzrVW82kPCx2eNUf38=",
       "dev": true,
       "requires": {
-        "string-width": "2.1.1"
+        "string-width": "^2.0.0"
       }
     },
     "ansi-regex": {
@@ -116,22 +116,289 @@
       "dev": true
     },
     "anymatch": {
-      "version": "1.3.2",
-      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-1.3.2.tgz",
-      "integrity": "sha512-0XNayC8lTHQ2OI8aljNCN3sSx6hsr/1+rlcDAotXJR7C1oZZHCNsfpbKwMjRA3Uqb5tF1Rae2oloTr4xpq+WjA==",
-      "dev": true,
-      "requires": {
-        "micromatch": "2.3.11",
-        "normalize-path": "2.1.1"
-      }
-    },
-    "arr-diff": {
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-      "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-2.0.0.tgz",
-      "integrity": "sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=",
+      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-2.0.0.tgz",
+      "integrity": "sha512-5teOsQWABXHHBFP9y3skS5P3d/WfWXpv3FUpy+LorMrNYaT9pI4oLMQX7jzQ2KklNpGpWHzdCXTDT2Y3XGlZBw==",
       "dev": true,
       "requires": {
-        "arr-flatten": "1.1.0"
+        "micromatch": "^3.1.4",
+        "normalize-path": "^2.1.1"
+      },
+      "dependencies": {
+        "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
+        },
+        "array-unique": {
+          "version": "0.3.2",
+          "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.3.2.tgz",
+          "integrity": "sha1-qJS3XUvE9s1nnvMkSp/Y9Gri1Cg=",
+          "dev": true
+        },
+        "braces": {
+          "version": "2.3.2",
+          "resolved": "https://registry.npmjs.org/braces/-/braces-2.3.2.tgz",
+          "integrity": "sha512-aNdbnj9P8PjdXU4ybaWLK2IF3jc/EoDYbC7AazW6to3TRsfXxscC9UXOB5iDiEQrkyIbWp2SLQda4+QAa7nc3w==",
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+            "array-unique": "^0.3.2",
+            "extend-shallow": "^2.0.1",
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+            "snapdragon": "^0.8.1",
+            "snapdragon-node": "^2.0.1",
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+            "to-regex": "^3.0.1"
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+              "dev": true,
+              "requires": {
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+              }
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+          "resolved": "https://registry.npmjs.org/expand-brackets/-/expand-brackets-2.1.4.tgz",
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+          "requires": {
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+            "define-property": "^0.2.5",
+            "extend-shallow": "^2.0.1",
+            "posix-character-classes": "^0.1.0",
+            "regex-not": "^1.0.0",
+            "snapdragon": "^0.8.1",
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+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
+          "dev": true
+        },
+        "kind-of": {
+          "version": "6.0.2",
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
+          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==",
+          "dev": true
+        },
+        "micromatch": {
+          "version": "3.1.10",
+          "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-3.1.10.tgz",
+          "integrity": "sha512-MWikgl9n9M3w+bpsY3He8L+w9eF9338xRl8IAO5viDizwSzziFEyUzo2xrrloB64ADbTf8uA8vRqqttDTOmccg==",
+          "dev": true,
+          "requires": {
+            "arr-diff": "^4.0.0",
+            "array-unique": "^0.3.2",
+            "braces": "^2.3.1",
+            "define-property": "^2.0.2",
+            "extend-shallow": "^3.0.2",
+            "extglob": "^2.0.4",
+            "fragment-cache": "^0.2.1",
+            "kind-of": "^6.0.2",
+            "nanomatch": "^1.2.9",
+            "object.pick": "^1.3.0",
+            "regex-not": "^1.0.0",
+            "snapdragon": "^0.8.1",
+            "to-regex": "^3.0.2"
+          }
+        }
       }
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     "arr-flatten": {
@@ -159,9 +426,9 @@
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-      "integrity": "sha1-8zshWfBTKj8xB6JywMz70a0peco=",
+      "version": "0.0.7",
+      "resolved": "https://registry.npmjs.org/arraybuffer.slice/-/arraybuffer.slice-0.0.7.tgz",
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       "dev": true,
       "requires": {
-        "bn.js": "4.11.8",
-        "inherits": "2.0.1",
-        "minimalistic-assert": "1.0.1"
+        "bn.js": "^4.0.0",
+        "inherits": "^2.0.1",
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@@ -196,7 +463,7 @@
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       "dev": true,
       "requires": {
-        "lodash": "4.17.11"
+        "lodash": "^4.17.10"
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@@ -205,6 +472,12 @@
       "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0=",
       "dev": true
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+    "async-limiter": {
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+      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz",
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@@ -217,9 +490,9 @@
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-        "esutils": "2.0.2",
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+        "chalk": "^1.1.3",
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-        "path-is-absolute": "1.0.1",
-        "private": "0.1.8",
-        "slash": "1.0.0",
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@@ -6320,14 +6543,14 @@
           "integrity": "sha512-Nmb6QXkELsuBr24CJSkilo6UHHgbekK5UiZgfE6UHD3Eb27YC6oD+bhcT+tJ6cl8dmsgdQxnWlcry8ksBIBLpw==",
           "dev": true,
           "requires": {
-            "array-unique": "0.3.2",
-            "define-property": "1.0.0",
-            "expand-brackets": "2.1.4",
-            "extend-shallow": "2.0.1",
-            "fragment-cache": "0.2.1",
-            "regex-not": "1.0.2",
-            "snapdragon": "0.8.2",
-            "to-regex": "3.0.2"
+            "array-unique": "^0.3.2",
+            "define-property": "^1.0.0",
+            "expand-brackets": "^2.1.4",
+            "extend-shallow": "^2.0.1",
+            "fragment-cache": "^0.2.1",
+            "regex-not": "^1.0.0",
+            "snapdragon": "^0.8.1",
+            "to-regex": "^3.0.1"
           },
           "dependencies": {
             "define-property": {
@@ -6336,7 +6559,7 @@
               "integrity": "sha1-dp66rz9KY6rTr56NMEybvnm/sOY=",
               "dev": true,
               "requires": {
-                "is-descriptor": "1.0.2"
+                "is-descriptor": "^1.0.0"
               }
             },
             "extend-shallow": {
@@ -6345,7 +6568,7 @@
               "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
               "dev": true,
               "requires": {
-                "is-extendable": "0.1.1"
+                "is-extendable": "^0.1.0"
               }
             }
           }
@@ -6356,10 +6579,10 @@
           "integrity": "sha1-1USBHUKPmOsGpj3EAtJAPDKMOPc=",
           "dev": true,
           "requires": {
-            "extend-shallow": "2.0.1",
-            "is-number": "3.0.0",
-            "repeat-string": "1.6.1",
-            "to-regex-range": "2.1.1"
+            "extend-shallow": "^2.0.1",
+            "is-number": "^3.0.0",
+            "repeat-string": "^1.6.1",
+            "to-regex-range": "^2.1.0"
           },
           "dependencies": {
             "extend-shallow": {
@@ -6368,7 +6591,7 @@
               "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
               "dev": true,
               "requires": {
-                "is-extendable": "0.1.1"
+                "is-extendable": "^0.1.0"
               }
             }
           }
@@ -6379,8 +6602,8 @@
           "integrity": "sha1-nmr2KZ2NO9K9QEMIMr0RPfkGxa4=",
           "dev": true,
           "requires": {
-            "is-glob": "3.1.0",
-            "path-dirname": "1.0.2"
+            "is-glob": "^3.1.0",
+            "path-dirname": "^1.0.0"
           },
           "dependencies": {
             "is-glob": {
@@ -6389,7 +6612,7 @@
               "integrity": "sha1-e6WuJCF4BKxwcHuWkiVnSGzD6Eo=",
               "dev": true,
               "requires": {
-                "is-extglob": "2.1.1"
+                "is-extglob": "^2.1.0"
               }
             }
           }
@@ -6400,7 +6623,7 @@
           "integrity": "sha512-m5hnHTkcVsPfqx3AKlyttIPb7J+XykHvJP2B9bZDjlhLIoEq4XoK64Vg7boZlVWYK6LUY94dYPEE7Lh0ZkZKcQ==",
           "dev": true,
           "requires": {
-            "kind-of": "6.0.2"
+            "kind-of": "^6.0.0"
           }
         },
         "is-data-descriptor": {
@@ -6409,7 +6632,7 @@
           "integrity": "sha512-jbRXy1FmtAoCjQkVmIVYwuuqDFUbaOeDjmed1tOGPrsMhtJA4rD9tkgA0F1qJ3gRFRXcHYVkdeaP50Q5rE/jLQ==",
           "dev": true,
           "requires": {
-            "kind-of": "6.0.2"
+            "kind-of": "^6.0.0"
           }
         },
         "is-descriptor": {
@@ -6418,9 +6641,9 @@
           "integrity": "sha512-2eis5WqQGV7peooDyLmNEPUrps9+SXX5c9pL3xEB+4e9HnGuDa7mB7kHxHw4CbqS9k1T2hOH3miL8n8WtiYVtg==",
           "dev": true,
           "requires": {
-            "is-accessor-descriptor": "1.0.0",
-            "is-data-descriptor": "1.0.0",
-            "kind-of": "6.0.2"
+            "is-accessor-descriptor": "^1.0.0",
+            "is-data-descriptor": "^1.0.0",
+            "kind-of": "^6.0.2"
           }
         },
         "is-extglob": {
@@ -6435,7 +6658,7 @@
           "integrity": "sha1-lSHHaEXMJhCoUgPd8ICpWML/q8A=",
           "dev": true,
           "requires": {
-            "is-extglob": "2.1.1"
+            "is-extglob": "^2.1.1"
           }
         },
         "is-number": {
@@ -6444,7 +6667,7 @@
           "integrity": "sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=",
           "dev": true,
           "requires": {
-            "kind-of": "3.2.2"
+            "kind-of": "^3.0.2"
           },
           "dependencies": {
             "kind-of": {
@@ -6453,7 +6676,7 @@
               "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
               "dev": true,
               "requires": {
-                "is-buffer": "1.1.6"
+                "is-buffer": "^1.1.5"
               }
             }
           }
@@ -6476,19 +6699,19 @@
           "integrity": "sha512-MWikgl9n9M3w+bpsY3He8L+w9eF9338xRl8IAO5viDizwSzziFEyUzo2xrrloB64ADbTf8uA8vRqqttDTOmccg==",
           "dev": true,
           "requires": {
-            "arr-diff": "4.0.0",
-            "array-unique": "0.3.2",
-            "braces": "2.3.2",
-            "define-property": "2.0.2",
-            "extend-shallow": "3.0.2",
-            "extglob": "2.0.4",
-            "fragment-cache": "0.2.1",
-            "kind-of": "6.0.2",
-            "nanomatch": "1.2.13",
-            "object.pick": "1.3.0",
-            "regex-not": "1.0.2",
-            "snapdragon": "0.8.2",
-            "to-regex": "3.0.2"
+            "arr-diff": "^4.0.0",
+            "array-unique": "^0.3.2",
+            "braces": "^2.3.1",
+            "define-property": "^2.0.2",
+            "extend-shallow": "^3.0.2",
+            "extglob": "^2.0.4",
+            "fragment-cache": "^0.2.1",
+            "kind-of": "^6.0.2",
+            "nanomatch": "^1.2.9",
+            "object.pick": "^1.3.0",
+            "regex-not": "^1.0.0",
+            "snapdragon": "^0.8.1",
+            "to-regex": "^3.0.2"
           }
         }
       }
@@ -6499,27 +6722,27 @@
       "integrity": "sha512-MjAA0ZqO1ba7ZQJRnoCdbM56mmFpipOPUv/vQpwwfSI42p5PVDdoiuK2AL2FwFUVgT859Jr43bFZXRg/LNsqvg==",
       "dev": true,
       "requires": {
-        "acorn": "5.7.3",
-        "acorn-dynamic-import": "2.0.2",
-        "ajv": "4.11.8",
-        "ajv-keywords": "1.5.1",
-        "async": "2.6.1",
-        "enhanced-resolve": "3.4.1",
-        "interpret": "1.1.0",
-        "json-loader": "0.5.7",
-        "json5": "0.5.1",
-        "loader-runner": "2.3.1",
-        "loader-utils": "0.2.17",
-        "memory-fs": "0.4.1",
-        "mkdirp": "0.5.1",
-        "node-libs-browser": "2.1.0",
-        "source-map": "0.5.7",
-        "supports-color": "3.2.3",
-        "tapable": "0.2.8",
-        "uglify-js": "2.8.29",
-        "watchpack": "1.6.0",
-        "webpack-sources": "1.3.0",
-        "yargs": "6.6.0"
+        "acorn": "^5.0.0",
+        "acorn-dynamic-import": "^2.0.0",
+        "ajv": "^4.7.0",
+        "ajv-keywords": "^1.1.1",
+        "async": "^2.1.2",
+        "enhanced-resolve": "^3.3.0",
+        "interpret": "^1.0.0",
+        "json-loader": "^0.5.4",
+        "json5": "^0.5.1",
+        "loader-runner": "^2.3.0",
+        "loader-utils": "^0.2.16",
+        "memory-fs": "~0.4.1",
+        "mkdirp": "~0.5.0",
+        "node-libs-browser": "^2.0.0",
+        "source-map": "^0.5.3",
+        "supports-color": "^3.1.0",
+        "tapable": "~0.2.5",
+        "uglify-js": "^2.8.27",
+        "watchpack": "^1.3.1",
+        "webpack-sources": "^1.0.1",
+        "yargs": "^6.0.0"
       },
       "dependencies": {
         "has-flag": {
@@ -6534,7 +6757,7 @@
           "integrity": "sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=",
           "dev": true,
           "requires": {
-            "has-flag": "1.0.0"
+            "has-flag": "^1.0.0"
           }
         }
       }
@@ -6545,8 +6768,8 @@
       "integrity": "sha512-OiVgSrbGu7NEnEvQJJgdSFPl2qWKkWq5lHMhgiToIiN9w34EBnjYzSYs+VbL5KoYiLNtFFa7BZIKxRED3I32pA==",
       "dev": true,
       "requires": {
-        "source-list-map": "2.0.1",
-        "source-map": "0.6.1"
+        "source-list-map": "^2.0.0",
+        "source-map": "~0.6.1"
       },
       "dependencies": {
         "source-map": {
@@ -6563,7 +6786,7 @@
       "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
       "dev": true,
       "requires": {
-        "isexe": "2.0.0"
+        "isexe": "^2.0.0"
       }
     },
     "which-module": {
@@ -6573,12 +6796,12 @@
       "dev": true
     },
     "widest-line": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/widest-line/-/widest-line-2.0.1.tgz",
-      "integrity": "sha512-Ba5m9/Fa4Xt9eb2ELXt77JxVDV8w7qQrH0zS/TWSJdLyAwQjWoOzpzj5lwVftDz6n/EOu3tNACS84v509qwnJA==",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/widest-line/-/widest-line-2.0.0.tgz",
+      "integrity": "sha1-AUKk6KJD+IgsAjOqDgKBqnYVInM=",
       "dev": true,
       "requires": {
-        "string-width": "2.1.1"
+        "string-width": "^2.1.1"
       }
     },
     "window-size": {
@@ -6599,8 +6822,8 @@
       "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
       "dev": true,
       "requires": {
-        "string-width": "1.0.2",
-        "strip-ansi": "3.0.1"
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1"
       },
       "dependencies": {
         "is-fullwidth-code-point": {
@@ -6609,7 +6832,7 @@
           "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
           "dev": true,
           "requires": {
-            "number-is-nan": "1.0.1"
+            "number-is-nan": "^1.0.0"
           }
         },
         "string-width": {
@@ -6618,9 +6841,9 @@
           "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
           "dev": true,
           "requires": {
-            "code-point-at": "1.1.0",
-            "is-fullwidth-code-point": "1.0.0",
-            "strip-ansi": "3.0.1"
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
           }
         }
       }
@@ -6637,27 +6860,22 @@
       "integrity": "sha512-xuPeK4OdjWqtfi59ylvVL0Yn35SF3zgcAcv7rBPFHVaEapaDr4GdGgm3j7ckTwH9wHL7fGmgfAnb0+THrHb8tA==",
       "dev": true,
       "requires": {
-        "graceful-fs": "4.1.15",
-        "imurmurhash": "0.1.4",
-        "signal-exit": "3.0.2"
+        "graceful-fs": "^4.1.11",
+        "imurmurhash": "^0.1.4",
+        "signal-exit": "^3.0.2"
       }
     },
     "ws": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-1.1.2.tgz",
-      "integrity": "sha1-iiRPoFJAHgjJiGz0SoUYnh/UBn8=",
+      "version": "3.3.3",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-3.3.3.tgz",
+      "integrity": "sha512-nnWLa/NwZSt4KQJu51MYlCcSQ5g7INpOrOMt4XV8j4dqTXdmlUmSHQ8/oLC069ckre0fRsgfvsKwbTdtKLCDkA==",
       "dev": true,
       "requires": {
-        "options": "0.0.6",
-        "ultron": "1.0.2"
+        "async-limiter": "~1.0.0",
+        "safe-buffer": "~5.1.0",
+        "ultron": "~1.1.0"
       }
     },
-    "wtf-8": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/wtf-8/-/wtf-8-1.0.0.tgz",
-      "integrity": "sha1-OS2LotDxw00e4tYw8V0O+2jhBIo=",
-      "dev": true
-    },
     "xdg-basedir": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/xdg-basedir/-/xdg-basedir-3.0.0.tgz",
@@ -6665,9 +6883,9 @@
       "dev": true
     },
     "xmlhttprequest-ssl": {
-      "version": "1.5.3",
-      "resolved": "https://registry.npmjs.org/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.3.tgz",
-      "integrity": "sha1-GFqIjATspGw+QHDZn3tJ3jUomS0=",
+      "version": "1.5.5",
+      "resolved": "https://registry.npmjs.org/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.5.tgz",
+      "integrity": "sha1-wodrBhaKrcQOV9l+gRkayPQ5iz4=",
       "dev": true
     },
     "xtend": {
@@ -6694,19 +6912,19 @@
       "integrity": "sha1-eC7CHvQDNF+DCoCMo9UTr1YGUgg=",
       "dev": true,
       "requires": {
-        "camelcase": "3.0.0",
-        "cliui": "3.2.0",
-        "decamelize": "1.2.0",
-        "get-caller-file": "1.0.3",
-        "os-locale": "1.4.0",
-        "read-pkg-up": "1.0.1",
-        "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": "4.2.1"
+        "camelcase": "^3.0.0",
+        "cliui": "^3.2.0",
+        "decamelize": "^1.1.1",
+        "get-caller-file": "^1.0.1",
+        "os-locale": "^1.4.0",
+        "read-pkg-up": "^1.0.1",
+        "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"
       },
       "dependencies": {
         "camelcase": {
@@ -6721,9 +6939,9 @@
           "integrity": "sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=",
           "dev": true,
           "requires": {
-            "string-width": "1.0.2",
-            "strip-ansi": "3.0.1",
-            "wrap-ansi": "2.1.0"
+            "string-width": "^1.0.1",
+            "strip-ansi": "^3.0.1",
+            "wrap-ansi": "^2.0.0"
           }
         },
         "is-fullwidth-code-point": {
@@ -6732,7 +6950,7 @@
           "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
           "dev": true,
           "requires": {
-            "number-is-nan": "1.0.1"
+            "number-is-nan": "^1.0.0"
           }
         },
         "string-width": {
@@ -6741,20 +6959,20 @@
           "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
           "dev": true,
           "requires": {
-            "code-point-at": "1.1.0",
-            "is-fullwidth-code-point": "1.0.0",
-            "strip-ansi": "3.0.1"
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
           }
         }
       }
     },
     "yargs-parser": {
       "version": "4.2.1",
-      "resolved": "http://registry.npmjs.org/yargs-parser/-/yargs-parser-4.2.1.tgz",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-4.2.1.tgz",
       "integrity": "sha1-KczqwNxPA8bIe0qfIX3RjJ90hxw=",
       "dev": true,
       "requires": {
-        "camelcase": "3.0.0"
+        "camelcase": "^3.0.0"
       },
       "dependencies": {
         "camelcase": {
diff --git a/package.json b/package.json
index 44e050c..86dcc95 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,9 @@
 {
   "name": "browser-headers",
   "version": "0.4.0",
-  "main": "lib/index.js",
-  "types": "lib/index.d.ts",
+  "main": "dist/browser-headers.js",
+  "browser": "dist/browser-headers.umd.js",
+  "types": "dist/typings/index.d.ts",
   "repository": "https://github.com/improbable-eng/js-browser-headers",
   "license": "Apache-2.0",
   "keywords": [
@@ -11,9 +12,9 @@
   ],
   "scripts": {
     "prepublish": "npm run clean && npm run build:lib",
-    "clean": "rm -rf build/* && rm -rf lib/*",
+    "clean": "rm -rf build && rm -rf lib && rm -rf dist",
     "build:test": "webpack",
-    "build:lib": "npm run clean && mkdir -p lib && tsc && mkdir -p build/js && cp -R src/js/*.js build/js && cp -R build/* lib",
+    "build:lib": "npm run clean && webpack",
     "lint": "tslint -c ./tslint.json ./src/**/*.ts ./test/**/*.ts",
     "test": "npm run build:test && karma start --single-run",
     "release": "./release.sh ${npm_package_version}"
@@ -25,13 +26,13 @@
     "babel-loader": "^6.3.2",
     "babel-preset-es2015": "^6.13.2",
     "jasmine-core": "^2.4.1",
-    "karma": "^1.2.0",
+    "karma": "^3.0.0",
     "karma-browserstack-launcher": "^1.3.0",
     "karma-jasmine": "^1.0.2",
     "karma-sourcemap-loader": "^0.3.7",
     "ts-loader": "^2.0.1",
     "tslint": "^4.4.2",
-    "typescript": "^2.2.1",
+    "typescript": "3.0.1",
     "webpack": "^2.2.1"
   },
   "dependencies": {},
diff --git a/src/BrowserHeaders.ts b/src/BrowserHeaders.ts
index 105d704..d49d135 100644
--- a/src/BrowserHeaders.ts
+++ b/src/BrowserHeaders.ts
@@ -21,7 +21,7 @@ declare const Map: MapConstructor;
 // Declare that there is a global property named "Headers" - this might not be present at runtime
 declare const Headers: any;
 
-// isBrowserHeaders is used to check if an argument is an instance of BrowserHeaders from another 
+// isBrowserHeaders is used to check if an argument is an instance of BrowserHeaders from another
 // version of the dependency.
 function isBrowserHeaders(arg: any): arg is BrowserHeaders {
   return typeof arg === "object" && typeof arg.headersMap === "object" && typeof arg.forEach === "function"
@@ -164,7 +164,7 @@ export class BrowserHeaders {
         callback(key, this.headersMap[key]);
       }, this);
   }
-  
+
   toHeaders(): Headers {
     if (typeof Headers !== "undefined") {
       const headers = new Headers();
diff --git a/src/iterateHeaders.ts b/src/iterateHeaders.ts
new file mode 100644
index 0000000..1632251
--- /dev/null
+++ b/src/iterateHeaders.ts
@@ -0,0 +1,19 @@
+import { WindowHeaders } from "./WindowHeaders";
+
+export function iterateHeaders(headers: WindowHeaders, callback: (entry: string[]) => void): void {
+  const iterator = (headers as any)[Symbol.iterator]();
+  let entry = iterator.next();
+  while (!entry.done) {
+    callback(entry.value[0]);
+    entry = iterator.next();
+  }
+}
+
+export function iterateHeadersKeys(headers: WindowHeaders, callback: (key: string) => void): void {
+  const iterator = headers.keys();
+  let entry = iterator.next();
+  while (!entry.done) {
+    callback(entry.value);
+    entry = iterator.next();
+  }
+}
diff --git a/src/js/iterateHeaders.d.ts b/src/js/iterateHeaders.d.ts
deleted file mode 100644
index cd2f097..0000000
--- a/src/js/iterateHeaders.d.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-import { WindowHeaders } from "../WindowHeaders";
-
-export declare function iterateHeaders(headers: WindowHeaders, callback: (entry: string[]) => void): void;
-
-export declare function iterateHeadersKeys(headers: WindowHeaders, callback: (key: string) => void): void;
\ No newline at end of file
diff --git a/src/js/iterateHeaders.js b/src/js/iterateHeaders.js
deleted file mode 100644
index 0220437..0000000
--- a/src/js/iterateHeaders.js
+++ /dev/null
@@ -1,23 +0,0 @@
-// This function is written in JS (ES5) to avoid an issue with TypeScript targeting ES5, but requiring Symbol.iterator
-function iterateHeaders(headers, callback) {
-  var iterator = headers[Symbol.iterator]();
-  var entry = iterator.next();
-  while(!entry.done) {
-    callback(entry.value[0]);
-    entry = iterator.next();
-  }
-}
-
-function iterateHeadersKeys(headers, callback) {
-  var iterator = headers.keys();
-  var entry = iterator.next();
-  while(!entry.done) {
-    callback(entry.value);
-    entry = iterator.next();
-  }
-}
-
-module.exports = {
-  iterateHeaders: iterateHeaders,
-  iterateHeadersKeys: iterateHeadersKeys
-};
diff --git a/src/util.ts b/src/util.ts
index a93bef0..195adae 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -1,5 +1,5 @@
 import { WindowHeaders } from "./WindowHeaders";
-import { iterateHeaders, iterateHeadersKeys } from "./js/iterateHeaders";
+import { iterateHeaders, iterateHeadersKeys } from "./iterateHeaders";
 
 // Declare that there is a global property named "Headers" - this might not be present at runtime
 declare const Headers: any;
diff --git a/tsconfig.json b/tsconfig.json
index a9e7a6a..04638bb 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -3,7 +3,7 @@
     "alwaysStrict": true,
     "sourceMap": true,
     "declaration": true,
-    "declarationDir": "build",
+    "declarationDir": "typings",
     "target": "es5",
     "removeComments": true,
     "noImplicitReturns": true,
diff --git a/webpack.config.js b/webpack.config.js
index 14e4688..62e9fa0 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -1,29 +1,63 @@
 const path = require('path');
+const packageJson = require("./package.json");
 
-module.exports = {
-  entry: "./test/BrowserHeaders.spec.ts",
-  output: {
-    path: path.resolve(__dirname, 'test', 'build'),
-    filename: 'integration-tests.js',
-  },
-  devtool: 'source-map',
+const LIB_BASE_CONFIG = {
+  entry: "./src/index.ts",
   module: {
-    rules: [
-      {
-        test: /\.js$/,
-        include: /src|test|node_modules/,
-        loader: 'babel-loader?cacheDirectory'
-      },
-      {
-        test: /\.ts$/,
-        include: /src|test|node_modules/,
-        loader: "babel-loader?cacheDirectory!ts-loader"
-      }
-    ]
+    rules: [{
+      test: /\.ts?$/,
+      use: 'ts-loader',
+      exclude: /node_modules/
+    }]
   },
-  plugins: [],
   resolve: {
-    extensions: [".ts", ".js"]
-  }
+    extensions: ['.ts', '.js']
+  },
 };
+const DIST_DIR = path.resolve(__dirname, 'dist');
 
+module.exports = [{
+    name: 'lib-commonjs',
+    ...LIB_BASE_CONFIG,
+    output: {
+      filename: `${packageJson.name}.js`,
+      path: DIST_DIR,
+      libraryTarget: 'commonjs',
+    }
+  },
+  {
+    name: 'lib-umd',
+    ...LIB_BASE_CONFIG,
+    output: {
+      filename: `${packageJson.name}.umd.js`,
+      path: DIST_DIR,
+      libraryTarget: 'umd',
+    }
+  },
+  {
+    name: 'tests',
+    entry: "./test/BrowserHeaders.spec.ts",
+    output: {
+      path: path.resolve(__dirname, 'test', 'build'),
+      filename: 'integration-tests.js',
+    },
+    devtool: 'source-map',
+    module: {
+      rules: [{
+          test: /\.js$/,
+          include: /src|test|node_modules/,
+          loader: 'babel-loader?cacheDirectory'
+        },
+        {
+          test: /\.ts$/,
+          include: /src|test|node_modules/,
+          loader: "babel-loader?cacheDirectory!ts-loader"
+        }
+      ]
+    },
+    plugins: [],
+    resolve: {
+      extensions: [".ts", ".js"]
+    }
+  }
+];