diff --git a/.travis.yml b/.travis.yml
index 24986c1..443159c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,9 @@ node_js:
   - 8
   - 10
 
+install:
+  - npm install   
+
 script:
 - npm test
 - npm run coverage
diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc7dddc..7f8d5bf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 <a name="1.0.0"></a>
 # [1.0.0](https://github.com/mattallty/Caporal.js/compare/v0.10.0...v1.0.0) (2018-10-24)
 
+**This is a major update which drops support for node.js < 6**
 
 ### Bug Fixes
 
diff --git a/package-lock.json b/package-lock.json
index 3466e68..66c6696 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,63 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@babel/code-frame": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0.tgz",
+      "integrity": "sha512-OfC2uemaknXr87bdLUkWog7nYuliM9Ij5HUcajsVcMCpQrcLmtxRbVFTIqmcSkSeYRBFBRxs2FiUqFJDLdiebA==",
+      "dev": true,
+      "requires": {
+        "@babel/highlight": "^7.0.0"
+      }
+    },
+    "@babel/highlight": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.0.0.tgz",
+      "integrity": "sha512-UFMC4ZeFC48Tpvj7C8UgLvtkaUuovQX+5xNWrsIoMG8o2z+XFKjKaN9iVmS84dPwVN00W4wPmqvYoZF3EGAsfw==",
+      "dev": true,
+      "requires": {
+        "chalk": "^2.0.0",
+        "esutils": "^2.0.2",
+        "js-tokens": "^4.0.0"
+      },
+      "dependencies": {
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "dev": true,
+          "requires": {
+            "color-convert": "^1.9.0"
+          }
+        },
+        "chalk": {
+          "version": "2.4.1",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.1.tgz",
+          "integrity": "sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
+          }
+        },
+        "has-flag": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
+          "dev": true
+        },
+        "supports-color": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        }
+      }
+    },
     "@sindresorhus/df": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/@sindresorhus/df/-/df-1.0.1.tgz",
@@ -27,27 +84,16 @@
       "dev": true
     },
     "acorn": {
-      "version": "5.0.3",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.0.3.tgz",
-      "integrity": "sha1-xGDfCEkUY/AozLguqzcwvwEIez0=",
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.0.2.tgz",
+      "integrity": "sha512-GXmKIvbrN3TV7aVqAzVFaMW8F8wzVX7voEBRO3bDA64+EX37YSayggRJP5Xig6HYHBkWKpFg9W5gg6orklubhg==",
       "dev": true
     },
     "acorn-jsx": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
-      "integrity": "sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=",
-      "dev": true,
-      "requires": {
-        "acorn": "^3.0.4"
-      },
-      "dependencies": {
-        "acorn": {
-          "version": "3.3.0",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
-          "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
-          "dev": true
-        }
-      }
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.0.0.tgz",
+      "integrity": "sha512-XkB50fn0MURDyww9+UYL3c1yLbOBz0ZFvrdYlGB8l+Ije1oSC75qAqrzSPjYQbdnQUzhlUGNKuesryAv0gxZOg==",
+      "dev": true
     },
     "add-stream": {
       "version": "1.0.0",
@@ -56,21 +102,17 @@
       "dev": true
     },
     "ajv": {
-      "version": "4.11.8",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-4.11.8.tgz",
-      "integrity": "sha1-gv+wKynmYq5TvcIK8VlHcGc5xTY=",
+      "version": "5.5.2",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
+      "integrity": "sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=",
       "dev": true,
       "requires": {
         "co": "^4.6.0",
-        "json-stable-stringify": "^1.0.1"
+        "fast-deep-equal": "^1.0.0",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.3.0"
       }
     },
-    "ajv-keywords": {
-      "version": "1.5.1",
-      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-1.5.1.tgz",
-      "integrity": "sha1-MU3QpLM2j609/NxU7eYXG4htrzw=",
-      "dev": true
-    },
     "align-text": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
@@ -94,9 +136,10 @@
       "integrity": "sha1-DELU+xcWDVqa8eSEus4cZpIsGyE="
     },
     "ansi-escapes": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-1.4.0.tgz",
-      "integrity": "sha1-06ioOzGapneTZisT52HHkRQiMG4="
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.1.0.tgz",
+      "integrity": "sha512-UgAb8H9D41AQnu/PbWlCofQVcnV4Gs2bBJi9eZPxfU/hgglFh3SMDMENRIqdr7H6XFnXdoknctFByVsCOotTVw==",
+      "dev": true
     },
     "ansi-regex": {
       "version": "2.1.1",
@@ -109,9 +152,9 @@
       "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4="
     },
     "are-we-there-yet": {
-      "version": "1.1.4",
-      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.4.tgz",
-      "integrity": "sha1-u13KOCu5TwXhUZQ3PRb9O6HKEQ0=",
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz",
+      "integrity": "sha512-5hYdAkZlcG8tOLujVDTgCT+uPX0VnpAH28gWsLfzpXYm7wP6mp5Q/gYyR7YQ0cKVJcXJnl3j2kpBan13PtQf6w==",
       "requires": {
         "delegates": "^1.0.0",
         "readable-stream": "^2.0.6"
@@ -136,9 +179,9 @@
       }
     },
     "arr-flatten": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/arr-flatten/-/arr-flatten-1.0.3.tgz",
-      "integrity": "sha1-onTthawIhJtr14R8RYB0XcUa37E=",
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/arr-flatten/-/arr-flatten-1.1.0.tgz",
+      "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==",
       "dev": true
     },
     "array-find-index": {
@@ -181,15 +224,18 @@
       "dev": true
     },
     "asn1": {
-      "version": "0.2.3",
-      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
-      "integrity": "sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y=",
-      "dev": true
+      "version": "0.2.4",
+      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
+      "integrity": "sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==",
+      "dev": true,
+      "requires": {
+        "safer-buffer": "~2.1.0"
+      }
     },
     "assert-plus": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-0.2.0.tgz",
-      "integrity": "sha1-104bh+ev/A24qttwIfP+SBAasjQ=",
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
       "dev": true
     },
     "async": {
@@ -204,28 +250,17 @@
       "dev": true
     },
     "aws-sign2": {
-      "version": "0.6.0",
-      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.6.0.tgz",
-      "integrity": "sha1-FDQt0428yU0OW4fXY81jYSwOeU8=",
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
+      "integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=",
       "dev": true
     },
     "aws4": {
-      "version": "1.6.0",
-      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.6.0.tgz",
-      "integrity": "sha1-g+9cqGCysy5KDe7e6MdxudtXRx4=",
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.8.0.tgz",
+      "integrity": "sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ==",
       "dev": true
     },
-    "babel-code-frame": {
-      "version": "6.22.0",
-      "resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.22.0.tgz",
-      "integrity": "sha1-AnYgvuVnqIwyVhV05/0IAdMxGOQ=",
-      "dev": true,
-      "requires": {
-        "chalk": "^1.1.0",
-        "esutils": "^2.0.2",
-        "js-tokens": "^3.0.0"
-      }
-    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -233,11 +268,10 @@
       "dev": true
     },
     "bcrypt-pbkdf": {
-      "version": "1.0.1",
-      "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=",
       "dev": true,
-      "optional": true,
       "requires": {
         "tweetnacl": "^0.14.3"
       }
@@ -247,15 +281,6 @@
       "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.0.tgz",
       "integrity": "sha1-eRQg1/VR7qKJdFOop3ZT+WYG1nw="
     },
-    "boom": {
-      "version": "2.10.1",
-      "resolved": "https://registry.npmjs.org/boom/-/boom-2.10.1.tgz",
-      "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
-      "dev": true,
-      "requires": {
-        "hoek": "2.x.x"
-      }
-    },
     "brace-expansion": {
       "version": "1.1.8",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.8.tgz",
@@ -278,9 +303,9 @@
       }
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     "browser-stdout": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.0.tgz",
-      "integrity": "sha1-81HTKWnTL6XXpVZxVCY9korjvR8=",
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.1.tgz",
+      "integrity": "sha512-qhAVI1+Av2X7qelOfAIYwXONood6XlZE/fXaBSmW/T5SzLAmCgzi+eiWE7fUvbHaeNBQH13UftjpXxsfLkMpgw==",
       "dev": true
     },
     "builtin-modules": {
@@ -290,13 +315,10 @@
       "dev": true
     },
     "cachedir": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/cachedir/-/cachedir-1.1.1.tgz",
-      "integrity": "sha1-4TYwdeogahJ2fZK7cRyKL3ahD2I=",
-      "dev": true,
-      "requires": {
-        "os-homedir": "^1.0.1"
-      }
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/cachedir/-/cachedir-2.1.0.tgz",
+      "integrity": "sha512-xGBpPqoBvn3unBW7oxgb8aJn42K0m9m1/wyjmazah10Fq7bROGG3kRAE6OIyr3U3PIJUqGuebhCEdMk9OKJG0A==",
+      "dev": true
     },
     "caller-path": {
       "version": "0.1.0",
@@ -358,6 +380,12 @@
         "supports-color": "^2.0.0"
       }
     },
+    "chardet": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/chardet/-/chardet-0.7.0.tgz",
+      "integrity": "sha512-mT8iDcrh03qDGRRmoA2hmBJnxpllMR+0/0qlzjqZES6NdiWDcZkCNAk4rPFZ9Q85r27unkiNNg8ZOiwZXBHwcA==",
+      "dev": true
+    },
     "ci-info": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/ci-info/-/ci-info-1.0.0.tgz",
@@ -365,17 +393,18 @@
       "dev": true
     },
     "circular-json": {
-      "version": "0.3.1",
-      "resolved": "https://registry.npmjs.org/circular-json/-/circular-json-0.3.1.tgz",
-      "integrity": "sha1-vos2rvzN6LPKeqLWr8B6NyQsDS0=",
+      "version": "0.3.3",
+      "resolved": "https://registry.npmjs.org/circular-json/-/circular-json-0.3.3.tgz",
+      "integrity": "sha512-UZK3NBx2Mca+b5LsG7bY183pHWt5Y1xts4P3Pz7ENTwGVnJOUWbRb3ocjvX7hx9tq/yTAdclXm9sZ38gNuem4A==",
       "dev": true
     },
     "cli-cursor": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/cli-cursor/-/cli-cursor-1.0.2.tgz",
-      "integrity": "sha1-ZNo/fValRBLll5S9Ytw1KV6PKYc=",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/cli-cursor/-/cli-cursor-2.1.0.tgz",
+      "integrity": "sha1-s12sN2R5+sw+lHR9QdDQ9SOP/LU=",
+      "dev": true,
       "requires": {
-        "restore-cursor": "^1.0.1"
+        "restore-cursor": "^2.0.0"
       }
     },
     "cli-table3": {
@@ -418,9 +447,9 @@
       }
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-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/cli-width/-/cli-width-2.1.0.tgz",
-      "integrity": "sha1-sjTKIJsp72b8UY2bmNWEewDt8Ao="
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/cli-width/-/cli-width-2.2.0.tgz",
+      "integrity": "sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk="
     },
     "cliui": {
       "version": "2.1.0",
@@ -450,32 +479,19 @@
       "dev": true
     },
     "codacy-coverage": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/codacy-coverage/-/codacy-coverage-2.0.2.tgz",
-      "integrity": "sha1-OU8vPA4rjukkKB5jPfUeKblN2Nk=",
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/codacy-coverage/-/codacy-coverage-3.2.0.tgz",
+      "integrity": "sha512-D/EeQ8GkkONK7Sd01hmn/xm+HTEEFWcxzkgF79+PbMDUdXPlYgL7G/gvQKX+lo5eSTEBH0flGWNou07gwJFBPQ==",
       "dev": true,
       "requires": {
-        "bluebird": "^2.9.x",
+        "bluebird": "^3.5.x",
         "commander": "^2.x",
-        "joi": "^6.4.x",
-        "lcov-parse": "0.x",
+        "joi": "^13.x",
+        "lcov-parse": "^1.x",
         "lodash": "^4.17.4",
         "log-driver": "^1.x",
-        "request-promise": "^0.x"
-      },
-      "dependencies": {
-        "bluebird": {
-          "version": "2.11.0",
-          "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-2.11.0.tgz",
-          "integrity": "sha1-U0uQM8AiyVecVro7Plpcqvu2UOE=",
-          "dev": true
-        },
-        "lodash": {
-          "version": "4.17.4",
-          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
-          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
-          "dev": true
-        }
+        "request": "^2.88.0",
+        "request-promise": "^4.x"
       }
     },
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@@ -483,6 +499,21 @@
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       "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
     },
+    "color-convert": {
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
+      "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
+      "dev": true,
+      "requires": {
+        "color-name": "1.1.3"
+      }
+    },
+    "color-name": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
+      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.0.1.tgz",
@@ -494,51 +525,67 @@
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-      "integrity": "sha1-k4NwpXtKUd6ix3wV1cX9+JUWQAk=",
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.7.tgz",
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       "dev": true,
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-      "version": "2.10.0",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.10.0.tgz",
-      "integrity": "sha512-q/r9trjmuikWDRJNTBHAVnWhuU6w+z80KgBq7j9YDclik5E7X4xi0KnlZBNFA1zOQ+SH/vHMWd2mC9QTOz7GpA==",
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@@ -3998,29 +4430,39 @@
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-      "integrity": "sha1-8lEl/w3Z2jzLDC3Tce4SiLuRKMA=",
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-      "resolved": "https://registry.npmjs.org/topo/-/topo-1.1.0.tgz",
-      "integrity": "sha1-6ddRYV0buH3IZdsYL6HKCl71NtU=",
+      "version": "3.0.0",
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+      "integrity": "sha512-Tlu1fGlR90iCdIPURqPiufqAlCZYzLjHYVVbcFWDMcX7+tK8hdZWAfsMrD/pBul9jqHHwFjNdf1WaxA9vTRRhw==",
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-      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.3.2.tgz",
-      "integrity": "sha1-8IH3bkyFcg5sN6X6ztc3FQ2EByo=",
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@@ -4091,10 +4533,10 @@
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-      "integrity": "sha1-OTvnMKlEb9Hq1tpZoBQwjzbCics=",
+    "tslib": {
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-      "dev": true,
-      "optional": true
+      "dev": true
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@@ -4174,13 +4615,19 @@
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-      "integrity": "sha1-nHC/2Babwdy/SGBODwS4tJzenp8=",
+    "universalify": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
+      "integrity": "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==",
+      "dev": true
+    },
+    "uri-js": {
+      "version": "4.2.2",
+      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
+      "integrity": "sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==",
       "dev": true,
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-        "os-homedir": "^1.0.0"
+        "punycode": "^2.1.0"
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@@ -4206,9 +4653,9 @@
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+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
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@@ -4234,12 +4681,14 @@
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-      "integrity": "sha1-z/XfEpRtKX0rqu+qJoniW+AcAFw=",
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
+      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
       "dev": true,
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+        "assert-plus": "^1.0.0",
+        "core-util-is": "1.0.2",
+        "extsprintf": "^1.2.0"
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diff --git a/package.json b/package.json
index 9bd1f2c..4bffc65 100644
--- a/package.json
+++ b/package.json
@@ -36,18 +36,18 @@
   "repository": "mattallty/Caporal.js",
   "license": "MIT",
   "devDependencies": {
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-    "commitizen": "^2.9.5",
+    "codacy-coverage": "^3.0.0",
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