diff --git a/package-lock.json b/package-lock.json
index 2a3917b..8a55d5f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2,14 +2,19 @@
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   "lockfileVersion": 1,
   "dependencies": {
+    "@types/supports-color": {
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/@types/supports-color/-/supports-color-5.3.0.tgz",
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+    },
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       "resolved": "https://registry.npmjs.org/JSONStream/-/JSONStream-1.3.3.tgz",
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       "dev": true,
       "requires": {
-        "jsonparse": "1.3.1",
-        "through": "2.3.8"
+        "jsonparse": "^1.2.0",
+        "through": ">=2.2.7 <3"
       }
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@@ -24,9 +29,9 @@
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       "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"
       }
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@@ -53,7 +58,7 @@
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       "dev": true,
       "requires": {
-        "color-convert": "1.9.1"
+        "color-convert": "^1.9.0"
       }
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@@ -68,8 +73,8 @@
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       "dev": true,
       "requires": {
-        "delegates": "1.0.0",
-        "readable-stream": "2.3.6"
+        "delegates": "^1.0.0",
+        "readable-stream": "^2.0.6"
       }
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     "array-find-index": {
@@ -90,7 +95,7 @@
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       "dev": true,
       "requires": {
-        "array-uniq": "1.0.3"
+        "array-uniq": "^1.0.1"
       }
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       "dev": true,
       "requires": {
-        "balanced-match": "1.0.0",
+        "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
       }
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@@ -158,9 +163,9 @@
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       "dev": true,
       "requires": {
-        "camelcase": "4.1.0",
-        "map-obj": "2.0.0",
-        "quick-lru": "1.1.0"
+        "camelcase": "^4.1.0",
+        "map-obj": "^2.0.0",
+        "quick-lru": "^1.0.0"
       },
       "dependencies": {
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@@ -184,8 +189,8 @@
       "dev": true,
       "optional": true,
       "requires": {
-        "align-text": "0.1.4",
-        "lazy-cache": "1.0.4"
+        "align-text": "^0.1.3",
+        "lazy-cache": "^1.0.3"
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@@ -194,9 +199,9 @@
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       "dev": true,
       "requires": {
-        "ansi-styles": "3.2.1",
-        "escape-string-regexp": "1.0.5",
-        "supports-color": "5.4.0"
+        "ansi-styles": "^3.2.1",
+        "escape-string-regexp": "^1.0.5",
+        "supports-color": "^5.3.0"
       }
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@@ -217,7 +222,7 @@
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       "dev": true,
       "requires": {
-        "restore-cursor": "2.0.0"
+        "restore-cursor": "^2.0.0"
       }
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@@ -233,8 +238,8 @@
       "dev": true,
       "optional": true,
       "requires": {
-        "center-align": "0.1.3",
-        "right-align": "0.1.3",
+        "center-align": "^0.1.1",
+        "right-align": "^0.1.1",
         "wordwrap": "0.0.2"
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@@ -259,8 +264,8 @@
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       "dev": true,
       "requires": {
-        "graceful-fs": "4.1.11",
-        "mkdirp": "0.5.1"
+        "graceful-fs": "^4.1.2",
+        "mkdirp": "~0.5.0"
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@@ -275,7 +280,7 @@
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       "dev": true,
       "requires": {
-        "color-name": "1.1.3"
+        "color-name": "^1.1.1"
       }
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@@ -290,8 +295,8 @@
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       "dev": true,
       "requires": {
-        "strip-ansi": "3.0.1",
-        "wcwidth": "1.0.1"
+        "strip-ansi": "^3.0.0",
+        "wcwidth": "^1.0.0"
       }
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@@ -306,8 +311,8 @@
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       "dev": true,
       "requires": {
-        "array-ify": "1.0.0",
-        "dot-prop": "3.0.0"
+        "array-ify": "^1.0.0",
+        "dot-prop": "^3.0.0"
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@@ -322,10 +327,10 @@
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       "dev": true,
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-        "buffer-from": "1.1.0",
-        "inherits": "2.0.3",
-        "readable-stream": "2.3.6",
-        "typedarray": "0.0.6"
+        "buffer-from": "^1.0.0",
+        "inherits": "^2.0.3",
+        "readable-stream": "^2.2.2",
+        "typedarray": "^0.0.6"
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       "dev": true,
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-        "conventional-changelog-atom": "0.2.8",
-        "conventional-changelog-codemirror": "0.3.8",
-        "conventional-changelog-core": "2.0.11",
-        "conventional-changelog-ember": "0.3.12",
-        "conventional-changelog-eslint": "1.0.9",
-        "conventional-changelog-express": "0.3.6",
-        "conventional-changelog-jquery": "0.1.0",
-        "conventional-changelog-jscs": "0.1.0",
-        "conventional-changelog-jshint": "0.3.8",
-        "conventional-changelog-preset-loader": "1.1.8"
+        "conventional-changelog-angular": "^1.6.6",
+        "conventional-changelog-atom": "^0.2.8",
+        "conventional-changelog-codemirror": "^0.3.8",
+        "conventional-changelog-core": "^2.0.11",
+        "conventional-changelog-ember": "^0.3.12",
+        "conventional-changelog-eslint": "^1.0.9",
+        "conventional-changelog-express": "^0.3.6",
+        "conventional-changelog-jquery": "^0.1.0",
+        "conventional-changelog-jscs": "^0.1.0",
+        "conventional-changelog-jshint": "^0.3.8",
+        "conventional-changelog-preset-loader": "^1.1.8"
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       "dev": true,
       "requires": {
-        "compare-func": "1.3.2",
-        "q": "1.5.1"
+        "compare-func": "^1.3.1",
+        "q": "^1.5.1"
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     "conventional-changelog-atom": {
@@ -369,7 +374,7 @@
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       "dev": true,
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-        "q": "1.5.1"
+        "q": "^1.5.1"
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     "conventional-changelog-cli": {
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-        "add-stream": "1.0.0",
-        "conventional-changelog": "1.1.24",
-        "lodash": "4.17.10",
-        "meow": "4.0.1",
-        "tempfile": "1.1.1"
+        "add-stream": "^1.0.0",
+        "conventional-changelog": "^1.1.24",
+        "lodash": "^4.2.1",
+        "meow": "^4.0.0",
+        "tempfile": "^1.1.1"
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     "conventional-changelog-codemirror": {
@@ -391,7 +396,7 @@
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       "dev": true,
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-        "q": "1.5.1"
+        "q": "^1.5.1"
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-        "conventional-commits-parser": "2.1.7",
-        "dateformat": "3.0.3",
-        "get-pkg-repo": "1.4.0",
-        "git-raw-commits": "1.3.6",
-        "git-remote-origin-url": "2.0.0",
-        "git-semver-tags": "1.3.6",
-        "lodash": "4.17.10",
-        "normalize-package-data": "2.4.0",
-        "q": "1.5.1",
-        "read-pkg": "1.1.0",
-        "read-pkg-up": "1.0.1",
-        "through2": "2.0.3"
+        "conventional-changelog-writer": "^3.0.9",
+        "conventional-commits-parser": "^2.1.7",
+        "dateformat": "^3.0.0",
+        "get-pkg-repo": "^1.0.0",
+        "git-raw-commits": "^1.3.6",
+        "git-remote-origin-url": "^2.0.0",
+        "git-semver-tags": "^1.3.6",
+        "lodash": "^4.2.1",
+        "normalize-package-data": "^2.3.5",
+        "q": "^1.5.1",
+        "read-pkg": "^1.1.0",
+        "read-pkg-up": "^1.0.1",
+        "through2": "^2.0.0"
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@@ -421,11 +426,11 @@
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           "dev": true,
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-            "parse-json": "2.2.0",
-            "pify": "2.3.0",
-            "pinkie-promise": "2.0.1",
-            "strip-bom": "2.0.0"
+            "graceful-fs": "^4.1.2",
+            "parse-json": "^2.2.0",
+            "pify": "^2.0.0",
+            "pinkie-promise": "^2.0.0",
+            "strip-bom": "^2.0.0"
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@@ -434,7 +439,7 @@
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           "dev": true,
           "requires": {
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+            "error-ex": "^1.2.0"
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@@ -443,9 +448,9 @@
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           "requires": {
-            "graceful-fs": "4.1.11",
-            "pify": "2.3.0",
-            "pinkie-promise": "2.0.1"
+            "graceful-fs": "^4.1.2",
+            "pify": "^2.0.0",
+            "pinkie-promise": "^2.0.0"
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@@ -460,9 +465,9 @@
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-            "normalize-package-data": "2.4.0",
-            "path-type": "1.1.0"
+            "load-json-file": "^1.0.0",
+            "normalize-package-data": "^2.3.2",
+            "path-type": "^1.0.0"
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@@ -471,7 +476,7 @@
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           "dev": true,
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+            "is-utf8": "^0.2.0"
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+        "q": "^1.5.1"
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+        "q": "^1.5.1"
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@@ -500,7 +505,7 @@
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+        "q": "^1.5.1"
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@@ -509,7 +514,7 @@
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+        "q": "^1.4.1"
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@@ -518,7 +523,7 @@
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+        "q": "^1.4.1"
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@@ -527,8 +532,8 @@
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-        "compare-func": "1.3.2",
-        "q": "1.5.1"
+        "compare-func": "^1.3.1",
+        "q": "^1.5.1"
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-        "dateformat": "3.0.3",
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-        "meow": "4.0.1",
-        "semver": "5.5.0",
-        "split": "1.0.1",
-        "through2": "2.0.3"
+        "compare-func": "^1.3.1",
+        "conventional-commits-filter": "^1.1.6",
+        "dateformat": "^3.0.0",
+        "handlebars": "^4.0.2",
+        "json-stringify-safe": "^5.0.1",
+        "lodash": "^4.2.1",
+        "meow": "^4.0.0",
+        "semver": "^5.5.0",
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-        "modify-values": "1.0.1"
+        "is-subset": "^0.1.1",
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-        "lodash": "4.17.10",
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-        "split2": "2.2.0",
-        "through2": "2.0.3",
-        "trim-off-newlines": "1.0.1"
+        "JSONStream": "^1.0.4",
+        "is-text-path": "^1.0.0",
+        "lodash": "^4.2.1",
+        "meow": "^4.0.0",
+        "split2": "^2.0.0",
+        "through2": "^2.0.0",
+        "trim-off-newlines": "^1.0.0"
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@@ -586,13 +591,13 @@
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-        "conventional-commits-filter": "1.1.6",
-        "conventional-commits-parser": "2.1.7",
-        "git-raw-commits": "1.3.6",
-        "git-semver-tags": "1.3.6",
-        "meow": "3.7.0",
-        "object-assign": "4.1.1"
+        "concat-stream": "^1.4.10",
+        "conventional-commits-filter": "^1.1.1",
+        "conventional-commits-parser": "^2.1.1",
+        "git-raw-commits": "^1.3.0",
+        "git-semver-tags": "^1.3.0",
+        "meow": "^3.3.0",
+        "object-assign": "^4.0.1"
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@@ -607,8 +612,8 @@
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           "dev": true,
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-            "camelcase": "2.1.1",
-            "map-obj": "1.0.1"
+            "camelcase": "^2.0.0",
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@@ -617,7 +622,7 @@
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@@ -632,16 +637,16 @@
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@@ -1164,17 +1169,16 @@
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-        "uglify-js": "2.8.29"
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-      "dev": true
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@@ -1194,7 +1198,7 @@
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+        "safer-buffer": ">= 2.1.2 < 3"
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@@ -1215,8 +1219,8 @@
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-        "wrappy": "1.0.2"
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-        "figures": "2.0.0",
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-        "strip-ansi": "4.0.0",
-        "through": "2.3.8"
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@@ -1265,7 +1269,7 @@
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           "dev": true,
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@@ -1294,7 +1298,7 @@
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@@ -1333,7 +1337,7 @@
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@@ -1384,7 +1388,7 @@
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+        "text-extensions": "^1.0.0"
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@@ -1423,7 +1427,7 @@
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@@ -1438,7 +1442,7 @@
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+        "inquirer": "^3.2.2",
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+        "lodash": "^4.17.4",
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+        "read-pkg": "^3.0.0",
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-        "pify": "3.0.0",
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-        "path-exists": "3.0.0"
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@@ -1544,8 +1548,8 @@
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@@ -1569,8 +1573,8 @@
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-        "redent": "2.0.0",
-        "trim-newlines": "2.0.0"
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+        "arrify": "^1.0.1",
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-        "is-builtin-module": "1.0.0",
-        "semver": "5.5.0",
-        "validate-npm-package-license": "3.0.3"
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@@ -1724,7 +1728,7 @@
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-        "gauge": "2.7.4",
-        "set-blocking": "2.0.0"
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@@ -1757,7 +1761,7 @@
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       "dev": true,
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+        "wrappy": "1"
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@@ -1766,7 +1770,7 @@
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@@ -1775,8 +1779,8 @@
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@@ -1796,13 +1800,13 @@
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-            "signal-exit": "3.0.2",
-            "strip-eof": "1.0.0"
+            "cross-spawn": "^5.0.1",
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       "dev": true,
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+        "p-try": "^1.0.0"
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@@ -1834,7 +1838,7 @@
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       "dev": true,
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+        "p-limit": "^1.1.0"
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@@ -1849,10 +1853,10 @@
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-        "registry-auth-token": "3.3.2",
-        "registry-url": "3.1.0",
-        "semver": "5.5.0"
+        "got": "^6.7.1",
+        "registry-auth-token": "^3.0.1",
+        "registry-url": "^3.0.3",
+        "semver": "^5.1.0"
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@@ -1867,8 +1871,8 @@
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       "dev": true,
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-        "json-parse-better-errors": "1.0.2"
+        "error-ex": "^1.3.1",
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@@ -1901,7 +1905,7 @@
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       "dev": true,
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+        "pify": "^3.0.0"
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@@ -1922,7 +1926,7 @@
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       "dev": true,
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-        "pinkie": "2.0.4"
+        "pinkie": "^2.0.0"
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@@ -1961,10 +1965,10 @@
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-        "ini": "1.3.5",
-        "minimist": "1.2.0",
-        "strip-json-comments": "2.0.1"
+        "deep-extend": "^0.6.0",
+        "ini": "~1.3.0",
+        "minimist": "^1.2.0",
+        "strip-json-comments": "~2.0.1"
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@@ -1981,7 +1985,7 @@
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-        "graceful-fs": "4.1.11"
+        "graceful-fs": "^4.1.2"
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@@ -1990,9 +1994,9 @@
       "integrity": "sha1-nLxoaXj+5l0WwA4rGcI3/Pbjg4k=",
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-        "normalize-package-data": "2.4.0",
-        "path-type": "3.0.0"
+        "load-json-file": "^4.0.0",
+        "normalize-package-data": "^2.3.2",
+        "path-type": "^3.0.0"
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@@ -2001,8 +2005,8 @@
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       "dev": true,
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-        "find-up": "1.1.2",
-        "read-pkg": "1.1.0"
+        "find-up": "^1.0.0",
+        "read-pkg": "^1.0.0"
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@@ -2011,8 +2015,8 @@
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-            "pinkie-promise": "2.0.1"
+            "path-exists": "^2.0.0",
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@@ -2021,11 +2025,11 @@
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-            "pify": "2.3.0",
-            "pinkie-promise": "2.0.1",
-            "strip-bom": "2.0.0"
+            "graceful-fs": "^4.1.2",
+            "parse-json": "^2.2.0",
+            "pify": "^2.0.0",
+            "pinkie-promise": "^2.0.0",
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@@ -2034,7 +2038,7 @@
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           "dev": true,
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@@ -2043,7 +2047,7 @@
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           "dev": true,
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+            "pinkie-promise": "^2.0.0"
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@@ -2052,9 +2056,9 @@
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-            "pify": "2.3.0",
-            "pinkie-promise": "2.0.1"
+            "graceful-fs": "^4.1.2",
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@@ -2069,9 +2073,9 @@
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-            "normalize-package-data": "2.4.0",
-            "path-type": "1.1.0"
+            "load-json-file": "^1.0.0",
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@@ -2080,7 +2084,7 @@
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           "dev": true,
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-            "is-utf8": "0.2.1"
+            "is-utf8": "^0.2.0"
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@@ -2527,9 +2530,9 @@
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@@ -2546,9 +2549,9 @@
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-            "decamelize": "1.2.0",
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@@ -2579,7 +2582,7 @@
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@@ -2807,10 +2810,10 @@
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-            "pify": "2.3.0",
-            "strip-bom": "3.0.0"
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@@ -2843,9 +2846,9 @@
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-            "path-type": "2.0.0"
+            "load-json-file": "^2.0.0",
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@@ -2854,8 +2857,8 @@
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+            "find-up": "^2.0.0",
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       }
@@ -2866,7 +2869,7 @@
       "integrity": "sha1-jQrELxbqVd69MyyvTEA4s+P139k=",
       "dev": true,
       "requires": {
-        "camelcase": "4.1.0"
+        "camelcase": "^4.1.0"
       },
       "dependencies": {
         "camelcase": {
diff --git a/package.json b/package.json
index 7a367ea..4989f10 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,10 @@
   "engines": {
     "node": ">= 8"
   },
-  "dependencies": {},
+  "dependencies": {
+    "@types/supports-color": "^5.3.0",
+    "supports-color": "^5.4.0"
+  },
   "devDependencies": {
     "lerna": "^2.11.0"
   }
diff --git a/packages/test-helper/lib/helper.ts b/packages/test-helper/lib/helper.ts
index 6eb0f55..cf57c6c 100644
--- a/packages/test-helper/lib/helper.ts
+++ b/packages/test-helper/lib/helper.ts
@@ -4,6 +4,7 @@ import { inspect } from 'util'
 import { createSandbox, SinonSandbox, SinonStub, createStubInstance } from 'sinon'
 import * as sinonChai from 'sinon-chai'
 import { noCallThru } from 'proxyquire'
+import * as supportsColor from 'supports-color'
 
 const caller = require('caller')
 
@@ -27,7 +28,7 @@ function asString(data: any) {
     'undefined' :
     (
       typeof data === 'object' ?
-        inspect(data, { colors: process.stdin.isTTY, breakLength: Infinity }) :
+        inspect(data, { colors: !!supportsColor, breakLength: Infinity }) :
         data
     )
 }