diff --git a/package-lock.json b/package-lock.json
index 043ad408..d216a6ae 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,15 +1,9 @@
 {
   "name": "elm-test",
-  "version": "0.19.0-beta5",
+  "version": "0.19.0-beta6",
   "lockfileVersion": 1,
   "requires": true,
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       "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
@@ -21,10 +15,13 @@
         "json-schema-traverse": "^0.3.0"
       }
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-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
+    "ansi-styles": {
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+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+      "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+      "requires": {
+        "color-convert": "^1.9.0"
+      }
     },
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       "version": "1.3.2",
@@ -35,22 +32,6 @@
         "normalize-path": "^2.0.0"
       }
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-      "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
-      "integrity": "sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw==",
-      "optional": true
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-      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz",
-      "integrity": "sha512-5hYdAkZlcG8tOLujVDTgCT+uPX0VnpAH28gWsLfzpXYm7wP6mp5Q/gYyR7YQ0cKVJcXJnl3j2kpBan13PtQf6w==",
-      "optional": true,
-      "requires": {
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-        "readable-stream": "^2.0.6"
-      }
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@@ -70,9 +51,12 @@
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     },
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-      "version": "0.2.3",
-      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
-      "integrity": "sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y="
+      "version": "0.2.4",
+      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
+      "integrity": "sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==",
+      "requires": {
+        "safer-buffer": "~2.1.0"
+      }
     },
     "assert-plus": {
       "version": "1.0.0",
@@ -105,9 +89,9 @@
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
     },
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-      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.1.tgz",
-      "integrity": "sha1-Y7xdy2EzG5K8Bf1SiVPDNGKgb40=",
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
+      "integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
       "optional": true,
       "requires": {
         "tweetnacl": "^0.14.3"
@@ -123,9 +107,9 @@
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-      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.10.0.tgz",
-      "integrity": "sha1-muuabF6IY4qtFx4Wf1kAq+JINdA="
+      "version": "1.11.0",
+      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.11.0.tgz",
+      "integrity": "sha1-RqoXUftqL5PuXmibsQh9SxTGwgU="
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       "version": "0.2.0",
@@ -153,9 +137,9 @@
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     },
     "brace-expansion": {
-      "version": "1.1.8",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.8.tgz",
-      "integrity": "sha1-wHshHHyVLsH479Uad+8NHTmQopI=",
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
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@@ -203,22 +187,12 @@
         "ansi-styles": "^3.1.0",
         "escape-string-regexp": "^1.0.5",
         "supports-color": "^4.0.0"
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-          "requires": {
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-      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-1.6.0.tgz",
-      "integrity": "sha1-kMMq1IApAddxPeUy3ChOlqY60Fg=",
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-1.7.0.tgz",
+      "integrity": "sha1-eY5ol3gVHIB2tLNg5e3SjNortGg=",
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@@ -236,17 +210,12 @@
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       "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ="
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-    "code-point-at": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
-      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
-    },
     "color-convert": {
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-      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.0.tgz",
-      "integrity": "sha1-Gsz5fdc5uYO/mU1W/sj5WFNkG3o=",
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
+      "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
       "requires": {
-        "color-name": "^1.1.1"
+        "color-name": "1.1.3"
       }
     },
     "color-name": {
@@ -262,16 +231,17 @@
         "delayed-stream": "~1.0.0"
       }
     },
+    "commander": {
+      "version": "2.15.1",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.15.1.tgz",
+      "integrity": "sha512-VlfT9F3V0v+jr4yxPc5gg9s62/fIVWsd2Bk2iD435um1NlGMYdVCq+MjcXnhYq2icNOizHr1kK+5TI6H0Hy0ag==",
+      "dev": true
+    },
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       "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
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@@ -292,62 +262,22 @@
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-      "optional": true,
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
+      "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
+      "dev": true,
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-    "deep-equal": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/deep-equal/-/deep-equal-1.0.1.tgz",
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@@ -355,12 +285,13 @@
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-      "integrity": "sha1-D8c6ntXw1Tw4GTOYUj735UN3dQU=",
+      "version": "0.1.2",
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+      "integrity": "sha1-OoOpBOVDUyh4dMVkt1SThoSamMk=",
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-        "jsbn": "~0.1.0"
+        "jsbn": "~0.1.0",
+        "safer-buffer": "^2.1.0"
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     "elm": {
@@ -394,30 +325,6 @@
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@@ -500,7 +407,7 @@
         },
         "lodash": {
           "version": "4.14.2",
-          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.14.2.tgz",
+          "resolved": "http://registry.npmjs.org/lodash/-/lodash-4.14.2.tgz",
           "integrity": "sha1-u8zOY3OkAPv9CoxnykL20e9BZDI="
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@@ -521,15 +428,6 @@
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@@ -576,13 +474,465 @@
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-        "node-pre-gyp": "^0.6.36"
+        "nan": "^2.9.2",
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diff --git a/package.json b/package.json
index 8b593849..81e34306 100644
--- a/package.json
+++ b/package.json
@@ -30,13 +30,12 @@
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   "dependencies": {
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@@ -48,7 +47,7 @@
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