diff --git a/.gitignore b/.gitignore
index 80de987..7a588ca 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,7 +8,7 @@
 /coverage
 
 # Output
-index.js
+build
 
 # MacOS
 .DS_Store
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 159dff1..e05e887 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,14 +14,14 @@
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-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.3.2.tgz",
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+      "version": "7.3.3",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.3.3.tgz",
+      "integrity": "sha512-aEADYwRRZjJyMnKN7llGIlircxTCofm3dtV5pmY6ob18MSIuipHpA2yZWkPlycwu5HJcx/pADS3zssd8eY7/6A==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.3.2",
+        "@babel/types": "^7.3.3",
         "jsesc": "^2.5.1",
-        "lodash": "^4.17.10",
+        "lodash": "^4.17.11",
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@@ -75,9 +75,9 @@
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-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.3.2.tgz",
-      "integrity": "sha512-QzNUC2RO1gadg+fs21fi0Uu0OuGNzRKEmgCxoLNzbCdoprLwjfmZwzUrpUNfJPaVRwBpDY47A17yYEGWyRelnQ==",
+      "version": "7.3.3",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.3.3.tgz",
+      "integrity": "sha512-xsH1CJoln2r74hR+y7cg2B5JCPaTh+Hd+EbBRk9nWGSNspuo6krjhX0Om6RnRQuIvFq8wVXCLKH3kwKDYhanSg==",
       "dev": true
     },
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@@ -126,13 +126,13 @@
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-      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.3.2.tgz",
-      "integrity": "sha512-3Y6H8xlUlpbGR+XvawiH0UXehqydTmNmEpozWcXymqwcrwYAl5KMvKtQ+TF6f6E08V6Jur7v/ykdDSF+WDEIXQ==",
+      "version": "7.3.3",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.3.3.tgz",
+      "integrity": "sha512-2tACZ80Wg09UnPg5uGAOUvvInaqLk3l/IAhQzlxLQOIXacr6bMsra5SH6AWw/hIDRCSbCdHP2KzSOD+cT7TzMQ==",
       "dev": true,
       "requires": {
         "esutils": "^2.0.2",
-        "lodash": "^4.17.10",
+        "lodash": "^4.17.11",
         "to-fast-properties": "^2.0.0"
       }
     },
@@ -171,9 +171,9 @@
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     "acorn": {
-      "version": "6.0.5",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.0.5.tgz",
-      "integrity": "sha512-i33Zgp3XWtmZBMNvCr4azvOFeWVw1Rk6p3hfi3LUDvIFraOMywb1kAtrbi+med14m4Xfpqm3zRZMT+c0FNE7kg==",
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.0.tgz",
+      "integrity": "sha512-MW/FjM+IvU9CgBzjO3UIPCE2pyEwUsoFl+VGdczOPEdxfGFjuKny/gN54mOuX7Qxmb9Rg9MCn2oKiSUeW+pjrw==",
       "dev": true
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@@ -207,13 +207,10 @@
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-      "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-2.0.0.tgz",
-      "integrity": "sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=",
-      "dev": true,
-      "requires": {
-        "arr-flatten": "^1.0.1"
-      }
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-4.0.0.tgz",
+      "integrity": "sha1-1kYQdP6/7HHn4VI1dhoyml3HxSA=",
+      "dev": true
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@@ -221,10 +218,16 @@
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       "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
+    },
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-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.2.1.tgz",
-      "integrity": "sha1-odl8yvy8JiXMcPrc6zalDFiwGlM=",
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.3.2.tgz",
+      "integrity": "sha1-qJS3XUvE9s1nnvMkSp/Y9Gri1Cg=",
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     },
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@@ -256,12 +259,24 @@
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
       "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=",
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+    },
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       "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k=",
       "dev": true
     },
+    "atob": {
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+      "resolved": "https://registry.npmjs.org/atob/-/atob-2.1.2.tgz",
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+      "dev": true
+    },
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@@ -280,6 +295,61 @@
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       "dev": true
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+    "base": {
+      "version": "0.11.2",
+      "resolved": "https://registry.npmjs.org/base/-/base-0.11.2.tgz",
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+      "dev": true,
+      "requires": {
+        "cache-base": "^1.0.1",
+        "class-utils": "^0.3.5",
+        "component-emitter": "^1.2.1",
+        "define-property": "^1.0.0",
+        "isobject": "^3.0.1",
+        "mixin-deep": "^1.2.0",
+        "pascalcase": "^0.1.1"
+      },
+      "dependencies": {
+        "define-property": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/define-property/-/define-property-1.0.0.tgz",
+          "integrity": "sha1-dp66rz9KY6rTr56NMEybvnm/sOY=",
+          "dev": true,
+          "requires": {
+            "is-descriptor": "^1.0.0"
+          }
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+        "is-accessor-descriptor": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-1.0.0.tgz",
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+          "dev": true,
+          "requires": {
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+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-1.0.0.tgz",
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+          "dev": true,
+          "requires": {
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+        "is-descriptor": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/is-descriptor/-/is-descriptor-1.0.2.tgz",
+          "integrity": "sha512-2eis5WqQGV7peooDyLmNEPUrps9+SXX5c9pL3xEB+4e9HnGuDa7mB7kHxHw4CbqS9k1T2hOH3miL8n8WtiYVtg==",
+          "dev": true,
+          "requires": {
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+            "kind-of": "^6.0.2"
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+      }
+    },
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@@ -300,14 +370,32 @@
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-      "resolved": "https://registry.npmjs.org/braces/-/braces-1.8.5.tgz",
-      "integrity": "sha1-uneWLhLf+WnWt2cR6RS3N4V79qc=",
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/braces/-/braces-2.3.2.tgz",
+      "integrity": "sha512-aNdbnj9P8PjdXU4ybaWLK2IF3jc/EoDYbC7AazW6to3TRsfXxscC9UXOB5iDiEQrkyIbWp2SLQda4+QAa7nc3w==",
       "dev": true,
       "requires": {
-        "expand-range": "^1.8.1",
-        "preserve": "^0.2.0",
-        "repeat-element": "^1.1.2"
+        "arr-flatten": "^1.1.0",
+        "array-unique": "^0.3.2",
+        "extend-shallow": "^2.0.1",
+        "fill-range": "^4.0.0",
+        "isobject": "^3.0.1",
+        "repeat-element": "^1.1.2",
+        "snapdragon": "^0.8.1",
+        "snapdragon-node": "^2.0.1",
+        "split-string": "^3.0.2",
+        "to-regex": "^3.0.1"
+      },
+      "dependencies": {
+        "extend-shallow": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
+          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
+          "dev": true,
+          "requires": {
+            "is-extendable": "^0.1.0"
+          }
+        }
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     },
     "browser-stdout": {
@@ -322,6 +410,23 @@
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       "dev": true
     },
+    "cache-base": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/cache-base/-/cache-base-1.0.1.tgz",
+      "integrity": "sha512-AKcdTnFSWATd5/GCPRxr2ChwIJ85CeyrEyjRHlKxQ56d4XJMGym0uAiKn0xbLOGOl3+yRpOTi484dVCEc5AUzQ==",
+      "dev": true,
+      "requires": {
+        "collection-visit": "^1.0.0",
+        "component-emitter": "^1.2.1",
+        "get-value": "^2.0.6",
+        "has-value": "^1.0.0",
+        "isobject": "^3.0.1",
+        "set-value": "^2.0.0",
+        "to-object-path": "^0.3.0",
+        "union-value": "^1.0.0",
+        "unset-value": "^1.0.0"
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+    },
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@@ -339,6 +444,39 @@
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+    "class-utils": {
+      "version": "0.3.6",
+      "resolved": "https://registry.npmjs.org/class-utils/-/class-utils-0.3.6.tgz",
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+        "define-property": "^0.2.5",
+        "isobject": "^3.0.0",
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+          "resolved": "https://registry.npmjs.org/define-property/-/define-property-0.2.5.tgz",
+          "integrity": "sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=",
+          "dev": true,
+          "requires": {
+            "is-descriptor": "^0.1.0"
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+    "collection-visit": {
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+      "resolved": "https://registry.npmjs.org/collection-visit/-/collection-visit-1.0.0.tgz",
+      "integrity": "sha1-S8A3PBZLwykbTTaMgpzxqApZ3KA=",
+      "dev": true,
+      "requires": {
+        "map-visit": "^1.0.0",
+        "object-visit": "^1.0.0"
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       "dev": true
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+    "component-emitter": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.2.1.tgz",
+      "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=",
+      "dev": true
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     "concat-map": {
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       "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
       "dev": true
     },
+    "copy-descriptor": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/copy-descriptor/-/copy-descriptor-0.1.1.tgz",
+      "integrity": "sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
@@ -421,6 +571,53 @@
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       }
     },
+    "decode-uri-component": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/decode-uri-component/-/decode-uri-component-0.2.0.tgz",
+      "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=",
+      "dev": true
+    },
+    "define-property": {
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+      "resolved": "https://registry.npmjs.org/define-property/-/define-property-2.0.2.tgz",
+      "integrity": "sha512-jwK2UV4cnPpbcG7+VRARKTZPUWowwXA8bzH5NP6ud0oeAxyYPuGZUAC7hMugpCdz4BeSZl2Dl9k66CHJ/46ZYQ==",
+      "dev": true,
+      "requires": {
+        "is-descriptor": "^1.0.2",
+        "isobject": "^3.0.1"
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+          "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-1.0.0.tgz",
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+          "dev": true,
+          "requires": {
+            "kind-of": "^6.0.0"
+          }
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+        "is-data-descriptor": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-1.0.0.tgz",
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+          "dev": true,
+          "requires": {
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+        "is-descriptor": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/is-descriptor/-/is-descriptor-1.0.2.tgz",
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+          "dev": true,
+          "requires": {
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+            "kind-of": "^6.0.2"
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@@ -456,9 +653,9 @@
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@@ -468,21 +665,47 @@
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-      "integrity": "sha1-3wcoTjQqgHzXM6xa9yQR5YHRF3s=",
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-      "dev": true,
-      "requires": {
-        "fill-range": "^2.1.0"
+        "debug": "^2.3.3",
+        "define-property": "^0.2.5",
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+        "posix-character-classes": "^0.1.0",
+        "regex-not": "^1.0.0",
+        "snapdragon": "^0.8.1",
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+          "dev": true,
+          "requires": {
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+        "define-property": {
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+          "resolved": "https://registry.npmjs.org/define-property/-/define-property-0.2.5.tgz",
+          "integrity": "sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=",
+          "dev": true,
+          "requires": {
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+        "extend-shallow": {
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+          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
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+          "dev": true,
+          "requires": {
+            "is-extendable": "^0.1.0"
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@@ -2267,6 +2849,21 @@
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@@ -2290,6 +2887,27 @@
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+      "requires": {
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@@ -2305,6 +2923,48 @@
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+          "dev": true,
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+        "extend-shallow": "^3.0.2",
+        "regex-not": "^1.0.2",
+        "safe-regex": "^1.1.0"
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+      "dev": true,
+      "requires": {
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+    "union-value": {
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+      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
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+        "is-extendable": "^0.1.1",
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+          "dev": true,
+          "requires": {
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+        "set-value": {
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+          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
+          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
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+          "requires": {
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+            "is-plain-object": "^2.0.1",
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+              "dev": true,
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@@ -2388,6 +3123,18 @@
         "punycode": "^2.1.0"
       }
     },
+    "urix": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/urix/-/urix-0.1.0.tgz",
+      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
+      "dev": true
+    },
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     "uuid": {
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       "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
@@ -2406,9 +3153,9 @@
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+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/webcrypto-core/-/webcrypto-core-1.0.5.tgz",
+      "integrity": "sha512-Poyk4Y3rNVRkReUbl9cTMgMzDMI1GJBJWyYrlGm3BH6c9VwCTKL26xRGccvDgcq7zHDN6GmePlX2kzvRFCNHjQ==",
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diff --git a/package.json b/package.json
index 6443cc7..b07c3fc 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "type": "git",
     "url": "https://github.com/PeculiarVentures/webcrypto.git"
   },
-  "main": "index.js",
+  "main": "build/webcrypto.js",
   "types": "index.d.ts",
   "scripts": {
     "test": "mocha",
@@ -44,8 +44,8 @@
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     "coveralls": "^3.0.2",
     "mocha": "^5.2.0",
-    "nyc": "^13.2.0",
-    "rollup": "^1.1.2",
+    "nyc": "^13.3.0",
+    "rollup": "^1.2.2",
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     "ts-node": "^7.0.1",
     "typescript": "^3.3.3"
@@ -56,7 +56,7 @@
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     "pvtsutils": "^1.0.3",
     "tslib": "^1.9.3",
-    "webcrypto-core": "^1.0.4"
+    "webcrypto-core": "^1.0.5"
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