diff --git a/package-lock.json b/package-lock.json
index 731429a..4c5ea11 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,12 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@tootallnate/once": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@tootallnate/once/-/once-1.0.0.tgz",
+      "integrity": "sha512-KYyTT/T6ALPkIRd2Ge080X/BsXvy9O0hcWTtMWkPvwAwF99+vn6Dv4GzrFT/Nn1LePr+FFDbRXXlqmsy9lw2zA==",
+      "dev": true
+    },
     "acorn": {
       "version": "5.5.3",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.5.3.tgz",
@@ -32,6 +38,32 @@
       "resolved": "https://registry.npmjs.org/after/-/after-0.8.2.tgz",
       "integrity": "sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8="
     },
+    "agent-base": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.0.tgz",
+      "integrity": "sha512-j1Q7cSCqN+AwrmDd+pzgqc0/NpC655x2bUf5ZjRIO77DcNBFmh+OgRNzF6OKdCC9RSCb19fGd99+bhXFdkRNqw==",
+      "dev": true,
+      "requires": {
+        "debug": "4"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
+          "dev": true
+        }
+      }
+    },
     "ajv": {
       "version": "5.5.2",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
@@ -674,161 +706,26 @@
       }
     },
     "codecov": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/codecov/-/codecov-3.0.0.tgz",
-      "integrity": "sha1-wnO4xPEpRXI+jcnSWAPYk0Pl8o4=",
+      "version": "3.6.5",
+      "resolved": "https://registry.npmjs.org/codecov/-/codecov-3.6.5.tgz",
+      "integrity": "sha512-v48WuDMUug6JXwmmfsMzhCHRnhUf8O3duqXvltaYJKrO1OekZWpB/eH6iIoaxMl8Qli0+u3OxptdsBOYiD7VAQ==",
       "dev": true,
       "requires": {
         "argv": "0.0.2",
-        "request": "2.81.0",
+        "ignore-walk": "3.0.3",
+        "js-yaml": "3.13.1",
+        "teeny-request": "6.0.1",
         "urlgrey": "0.4.4"
       },
       "dependencies": {
-        "ajv": {
-          "version": "4.11.8",
-          "resolved": "https://registry.npmjs.org/ajv/-/ajv-4.11.8.tgz",
-          "integrity": "sha1-gv+wKynmYq5TvcIK8VlHcGc5xTY=",
-          "dev": true,
-          "requires": {
-            "co": "4.6.0",
-            "json-stable-stringify": "1.0.1"
-          }
-        },
-        "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=",
-          "dev": true
-        },
-        "aws-sign2": {
-          "version": "0.6.0",
-          "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.6.0.tgz",
-          "integrity": "sha1-FDQt0428yU0OW4fXY81jYSwOeU8=",
-          "dev": true
-        },
-        "boom": {
-          "version": "2.10.1",
-          "resolved": "https://registry.npmjs.org/boom/-/boom-2.10.1.tgz",
-          "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
+        "js-yaml": {
+          "version": "3.13.1",
+          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.13.1.tgz",
+          "integrity": "sha512-YfbcO7jXDdyj0DGxYVSlSeQNHbD7XPWvrVWeVUujrQEoZzWJIRrCPoyk6kL6IAjAG2IolMK4T0hNUe0HOUs5Jw==",
           "dev": true,
           "requires": {
-            "hoek": "2.16.3"
-          }
-        },
-        "cryptiles": {
-          "version": "2.0.5",
-          "resolved": "https://registry.npmjs.org/cryptiles/-/cryptiles-2.0.5.tgz",
-          "integrity": "sha1-O9/s3GCBR8HGcgL6KR59ylnqo7g=",
-          "dev": true,
-          "requires": {
-            "boom": "2.10.1"
-          }
-        },
-        "form-data": {
-          "version": "2.1.4",
-          "resolved": "https://registry.npmjs.org/form-data/-/form-data-2.1.4.tgz",
-          "integrity": "sha1-M8GDrPGTJ27KqYFDpp6Uv+4XUNE=",
-          "dev": true,
-          "requires": {
-            "asynckit": "0.4.0",
-            "combined-stream": "1.0.5",
-            "mime-types": "2.1.17"
-          }
-        },
-        "har-schema": {
-          "version": "1.0.5",
-          "resolved": "https://registry.npmjs.org/har-schema/-/har-schema-1.0.5.tgz",
-          "integrity": "sha1-0mMTX0MwfALGAq/I/pWXDAFRNp4=",
-          "dev": true
-        },
-        "har-validator": {
-          "version": "4.2.1",
-          "resolved": "https://registry.npmjs.org/har-validator/-/har-validator-4.2.1.tgz",
-          "integrity": "sha1-M0gdDxu/9gDdID11gSpqX7oALio=",
-          "dev": true,
-          "requires": {
-            "ajv": "4.11.8",
-            "har-schema": "1.0.5"
-          }
-        },
-        "hawk": {
-          "version": "3.1.3",
-          "resolved": "https://registry.npmjs.org/hawk/-/hawk-3.1.3.tgz",
-          "integrity": "sha1-B4REvXwWQLD+VA0sm3PVlnjo4cQ=",
-          "dev": true,
-          "requires": {
-            "boom": "2.10.1",
-            "cryptiles": "2.0.5",
-            "hoek": "2.16.3",
-            "sntp": "1.0.9"
-          }
-        },
-        "hoek": {
-          "version": "2.16.3",
-          "resolved": "https://registry.npmjs.org/hoek/-/hoek-2.16.3.tgz",
-          "integrity": "sha1-ILt0A9POo5jpHcRxCo/xuCdKJe0=",
-          "dev": true
-        },
-        "http-signature": {
-          "version": "1.1.1",
-          "resolved": "https://registry.npmjs.org/http-signature/-/http-signature-1.1.1.tgz",
-          "integrity": "sha1-33LiZwZs0Kxn+3at+OE0qPvPkb8=",
-          "dev": true,
-          "requires": {
-            "assert-plus": "0.2.0",
-            "jsprim": "1.4.1",
-            "sshpk": "1.13.1"
-          }
-        },
-        "performance-now": {
-          "version": "0.2.0",
-          "resolved": "https://registry.npmjs.org/performance-now/-/performance-now-0.2.0.tgz",
-          "integrity": "sha1-M+8wxcd9TqIcWlOGnZG1bY8lVeU=",
-          "dev": true
-        },
-        "qs": {
-          "version": "6.4.0",
-          "resolved": "https://registry.npmjs.org/qs/-/qs-6.4.0.tgz",
-          "integrity": "sha1-E+JtKK1rD/qpExLNO/cI7TUecjM=",
-          "dev": true
-        },
-        "request": {
-          "version": "2.81.0",
-          "resolved": "https://registry.npmjs.org/request/-/request-2.81.0.tgz",
-          "integrity": "sha1-xpKJRqDgbF+Nb4qTM0af/aRimKA=",
-          "dev": true,
-          "requires": {
-            "aws-sign2": "0.6.0",
-            "aws4": "1.6.0",
-            "caseless": "0.12.0",
-            "combined-stream": "1.0.5",
-            "extend": "3.0.1",
-            "forever-agent": "0.6.1",
-            "form-data": "2.1.4",
-            "har-validator": "4.2.1",
-            "hawk": "3.1.3",
-            "http-signature": "1.1.1",
-            "is-typedarray": "1.0.0",
-            "isstream": "0.1.2",
-            "json-stringify-safe": "5.0.1",
-            "mime-types": "2.1.17",
-            "oauth-sign": "0.8.2",
-            "performance-now": "0.2.0",
-            "qs": "6.4.0",
-            "safe-buffer": "5.1.1",
-            "stringstream": "0.0.5",
-            "tough-cookie": "2.3.3",
-            "tunnel-agent": "0.6.0",
-            "uuid": "3.1.0"
-          }
-        },
-        "sntp": {
-          "version": "1.0.9",
-          "resolved": "https://registry.npmjs.org/sntp/-/sntp-1.0.9.tgz",
-          "integrity": "sha1-ZUEYTMkK7qbG57NeJlkIJEPGYZg=",
-          "dev": true,
-          "requires": {
-            "hoek": "2.16.3"
+            "argparse": "^1.0.7",
+            "esprima": "^4.0.0"
           }
         }
       }
@@ -1803,6 +1700,34 @@
       "integrity": "sha512-lIbgIIQA3lz5XaB6vxakj6sDHADJiZadYEJB+FgA+C4nubM1NwcuvUr9EJPmnH1skZqpqUzWborWo8EIUi0Sdw==",
       "dev": true
     },
+    "http-proxy-agent": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/http-proxy-agent/-/http-proxy-agent-4.0.1.tgz",
+      "integrity": "sha512-k0zdNgqWTGA6aeIRVpvfVob4fL52dTfaehylg0Y4UvSySvOq/Y+BOyPrgpUrA7HylqvU8vIZGsRuXmspskV0Tg==",
+      "dev": true,
+      "requires": {
+        "@tootallnate/once": "1",
+        "agent-base": "6",
+        "debug": "4"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
+          "dev": true
+        }
+      }
+    },
     "http-signature": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/http-signature/-/http-signature-1.2.0.tgz",
@@ -1813,6 +1738,39 @@
         "sshpk": "1.13.1"
       }
     },
+    "https-proxy-agent": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-4.0.0.tgz",
+      "integrity": "sha512-zoDhWrkR3of1l9QAL8/scJZyLu8j/gBkcwcaQOZh7Gyh/+uJQzGVETdgT30akuwkpL8HTRfssqI3BZuV18teDg==",
+      "dev": true,
+      "requires": {
+        "agent-base": "5",
+        "debug": "4"
+      },
+      "dependencies": {
+        "agent-base": {
+          "version": "5.1.1",
+          "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-5.1.1.tgz",
+          "integrity": "sha512-TMeqbNl2fMW0nMjTEPOwe3J/PRFP4vqeoNuQMG0HlMrtm5QxKqdvAkZ1pRBQ/ulIyDD5Yq0nJ7YbdD8ey0TO3g==",
+          "dev": true
+        },
+        "debug": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
+          "dev": true
+        }
+      }
+    },
     "iconv-lite": {
       "version": "0.4.19",
       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.19.tgz",
@@ -1824,6 +1782,15 @@
       "integrity": "sha512-YGG3ejvBNHRqu0559EOxxNFihD0AjpvHlC/pdGKd3X3ofe+CoJkYazwNJYTNebqpPKN+VVQbh4ZFn1DivMNuHA==",
       "dev": true
     },
+    "ignore-walk": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/ignore-walk/-/ignore-walk-3.0.3.tgz",
+      "integrity": "sha512-m7o6xuOaT1aqheYHKf8W6J5pYH85ZI9w077erOzLje3JsB1gkafkAhHHY19dqjulgIZHFm32Cp5uNZgcQqdJKw==",
+      "dev": true,
+      "requires": {
+        "minimatch": "^3.0.4"
+      }
+    },
     "imurmurhash": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/imurmurhash/-/imurmurhash-0.1.4.tgz",
@@ -2082,15 +2049,6 @@
       "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.3.1.tgz",
       "integrity": "sha1-NJptRMU6Ud6JtAgFxdXlm0F9M0A="
     },
-    "json-stable-stringify": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/json-stable-stringify/-/json-stable-stringify-1.0.1.tgz",
-      "integrity": "sha1-mnWdOcXy/1A/1TAGRu1EX4jE+a8=",
-      "dev": true,
-      "requires": {
-        "jsonify": "0.0.0"
-      }
-    },
     "json-stable-stringify-without-jsonify": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz",
@@ -2102,12 +2060,6 @@
       "resolved": "https://registry.npmjs.org/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz",
       "integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus="
     },
-    "jsonify": {
-      "version": "0.0.0",
-      "resolved": "https://registry.npmjs.org/jsonify/-/jsonify-0.0.0.tgz",
-      "integrity": "sha1-LHS27kHZPKUbe1qu6PUDYx0lKnM=",
-      "dev": true
-    },
     "jsonpointer": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/jsonpointer/-/jsonpointer-4.0.1.tgz",
@@ -2441,6 +2393,12 @@
         }
       }
     },
+    "node-fetch": {
+      "version": "2.6.0",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.0.tgz",
+      "integrity": "sha512-8dG4H5ujfvFiqDmVu9fQ5bOHUC15JMjMY/Zumv26oOvvVJjM67KF8koCWIabKQ1GJIa9r2mMZscBq/TbdOcmNA==",
+      "dev": true
+    },
     "normalize-package-data": {
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/normalize-package-data/-/normalize-package-data-2.4.0.tgz",
@@ -2508,6 +2466,7 @@
           "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
           "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "3.2.2",
             "longest": "1.0.1",
@@ -3426,7 +3385,8 @@
           "version": "1.0.1",
           "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
           "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "loose-envify": {
           "version": "1.3.1",
@@ -5018,6 +4978,15 @@
       "resolved": "https://registry.npmjs.org/stealthy-require/-/stealthy-require-1.1.1.tgz",
       "integrity": "sha1-NbCYdbT/SfJqd35QmzCQoyJr8ks="
     },
+    "stream-events": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/stream-events/-/stream-events-1.0.5.tgz",
+      "integrity": "sha512-E1GUzBSgvct8Jsb3v2X15pjzN1tYebtbLaMg+eBOUOAxgbLoSbT2NS91ckc5lJD1KfLjId+jXJRgo0qnV5Nerg==",
+      "dev": true,
+      "requires": {
+        "stubs": "^3.0.0"
+      }
+    },
     "string-argv": {
       "version": "0.0.2",
       "resolved": "https://registry.npmjs.org/string-argv/-/string-argv-0.0.2.tgz",
@@ -5067,6 +5036,12 @@
       "integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo=",
       "dev": true
     },
+    "stubs": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/stubs/-/stubs-3.0.0.tgz",
+      "integrity": "sha1-6NK6H6nJBXAwPAMLaQD31fiavls=",
+      "dev": true
+    },
     "supports-color": {
       "version": "4.5.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-4.5.0.tgz",
@@ -5253,6 +5228,27 @@
         }
       }
     },
+    "teeny-request": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/teeny-request/-/teeny-request-6.0.1.tgz",
+      "integrity": "sha512-TAK0c9a00ELOqLrZ49cFxvPVogMUFaWY8dUsQc/0CuQPGF+BOxOQzXfE413BAk2kLomwNplvdtMpeaeGWmoc2g==",
+      "dev": true,
+      "requires": {
+        "http-proxy-agent": "^4.0.0",
+        "https-proxy-agent": "^4.0.0",
+        "node-fetch": "^2.2.0",
+        "stream-events": "^1.0.5",
+        "uuid": "^3.3.2"
+      },
+      "dependencies": {
+        "uuid": {
+          "version": "3.4.0",
+          "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.4.0.tgz",
+          "integrity": "sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==",
+          "dev": true
+        }
+      }
+    },
     "text-encoding": {
       "version": "0.6.4",
       "resolved": "https://registry.npmjs.org/text-encoding/-/text-encoding-0.6.4.tgz",