diff --git a/package-lock.json b/package-lock.json
index 8be8990..e6475ff 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,12 @@
   "lockfileVersion": 1,
   "requires": true,
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+      "resolved": "https://registry.npmjs.org/@tootallnate/once/-/once-1.0.0.tgz",
+      "integrity": "sha512-KYyTT/T6ALPkIRd2Ge080X/BsXvy9O0hcWTtMWkPvwAwF99+vn6Dv4GzrFT/Nn1LePr+FFDbRXXlqmsy9lw2zA==",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.0.9.tgz",
@@ -49,6 +55,32 @@
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       "dev": true
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+    "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": {
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+      },
+      "dependencies": {
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+          "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
+        }
+      }
+    },
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       "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.1.tgz",
@@ -160,12 +192,6 @@
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-      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
-      "integrity": "sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y=",
-      "dev": true
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@@ -186,12 +212,6 @@
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-      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-0.2.0.tgz",
-      "integrity": "sha1-104bh+ev/A24qttwIfP+SBAasjQ=",
-      "dev": true
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@@ -204,24 +224,6 @@
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-      "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
-      "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k=",
-      "dev": true
-    },
-    "aws-sign2": {
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-      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.6.0.tgz",
-      "integrity": "sha1-FDQt0428yU0OW4fXY81jYSwOeU8=",
-      "dev": true
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-    "aws4": {
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-      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.6.0.tgz",
-      "integrity": "sha1-g+9cqGCysy5KDe7e6MdxudtXRx4=",
-      "dev": true
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@@ -804,16 +806,6 @@
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-      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.1.tgz",
-      "integrity": "sha1-Y7xdy2EzG5K8Bf1SiVPDNGKgb40=",
-      "dev": true,
-      "optional": true,
-      "requires": {
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@@ -882,15 +874,6 @@
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-      "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
-      "dev": true,
-      "requires": {
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-      }
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@@ -1045,12 +1028,6 @@
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-      "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
-      "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=",
-      "dev": true
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@@ -1133,14 +1110,34 @@
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-      "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": {
+        "esprima": {
+          "version": "4.0.1",
+          "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.1.tgz",
+          "integrity": "sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==",
+          "dev": true
+        },
+        "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": {
+            "argparse": "^1.0.7",
+            "esprima": "^4.0.0"
+          }
+        }
       }
     },
     "colors": {
@@ -1158,15 +1155,6 @@
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-      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.5.tgz",
-      "integrity": "sha1-k4NwpXtKUd6ix3wV1cX9+JUWQAk=",
-      "dev": true,
-      "requires": {
-        "delayed-stream": "~1.0.0"
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@@ -1324,15 +1312,6 @@
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-      "resolved": "https://registry.npmjs.org/cryptiles/-/cryptiles-2.0.5.tgz",
-      "integrity": "sha1-O9/s3GCBR8HGcgL6KR59ylnqo7g=",
-      "dev": true,
-      "requires": {
-        "boom": "2.x.x"
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@@ -1376,23 +1355,6 @@
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-      "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
-      "integrity": "sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=",
-      "dev": true,
-      "requires": {
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-          "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
-          "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-          "dev": true
-        }
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@@ -1430,12 +1392,6 @@
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-      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
-      "dev": true
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@@ -1496,16 +1452,6 @@
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       "dev": true
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-    "ecc-jsbn": {
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-      "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.1.tgz",
-      "integrity": "sha1-D8c6ntXw1Tw4GTOYUj735UN3dQU=",
-      "dev": true,
-      "optional": true,
-      "requires": {
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@@ -1956,12 +1902,6 @@
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-      "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
-      "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=",
-      "dev": true
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@@ -2067,23 +2007,6 @@
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-      "resolved": "https://registry.npmjs.org/forever-agent/-/forever-agent-0.6.1.tgz",
-      "integrity": "sha1-+8cfDEGt6zf5bFd60e1C2P2sypE=",
-      "dev": true
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-      "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": "^2.1.12"
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@@ -2129,7 +2052,8 @@
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-          "dev": true
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+          "optional": true
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@@ -2180,7 +2104,8 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -2195,6 +2120,7 @@
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           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -2203,6 +2129,7 @@
           "version": "2.10.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "hoek": "2.x.x"
           }
@@ -2211,6 +2138,7 @@
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           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -2219,7 +2147,8 @@
         "buffer-shims": {
           "version": "1.0.0",
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -2236,12 +2165,14 @@
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           "version": "1.1.0",
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-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "1.0.5",
           "bundled": true,
           "dev": true,
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           "requires": {
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@@ -2249,22 +2180,26 @@
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           "version": "0.0.1",
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-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "1.1.0",
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+          "dev": true,
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           "version": "1.0.2",
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+          "dev": true,
+          "optional": true
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           "version": "2.0.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -2304,7 +2239,8 @@
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           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -2336,7 +2272,8 @@
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           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -2358,12 +2295,14 @@
         "fs.realpath": {
           "version": "1.0.0",
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-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "1.0.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -2419,6 +2358,7 @@
           "version": "7.1.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "fs.realpath": "^1.0.0",
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@@ -2431,7 +2371,8 @@
         "graceful-fs": {
           "version": "4.1.11",
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-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "1.0.5",
@@ -2459,6 +2400,7 @@
           "version": "3.1.3",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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             "cryptiles": "2.x.x",
@@ -2469,7 +2411,8 @@
         "hoek": {
           "version": "2.16.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -2486,6 +2429,7 @@
           "version": "1.0.6",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -2494,7 +2438,8 @@
         "inherits": {
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -2506,6 +2451,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -2519,7 +2465,8 @@
         "isarray": {
           "version": "1.0.0",
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-          "dev": true
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@@ -2592,12 +2539,14 @@
         "mime-db": {
           "version": "1.27.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "mime-types": {
           "version": "2.1.15",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -2606,6 +2555,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -2613,12 +2563,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -2673,7 +2625,8 @@
         "number-is-nan": {
           "version": "1.0.1",
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-          "dev": true
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+          "optional": true
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@@ -2691,6 +2644,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -2720,7 +2674,8 @@
         "path-is-absolute": {
           "version": "1.0.1",
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-          "dev": true
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@@ -2731,7 +2686,8 @@
         "process-nextick-args": {
           "version": "1.0.7",
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@@ -2769,6 +2725,7 @@
           "version": "2.2.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -2813,6 +2770,7 @@
           "version": "2.6.1",
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           "dev": true,
+          "optional": true,
           "requires": {
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@@ -2820,7 +2778,8 @@
         "safe-buffer": {
           "version": "5.0.1",
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-          "dev": true
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           "version": "5.3.0",
@@ -2844,6 +2803,7 @@
           "version": "1.0.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -2877,6 +2837,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -2887,6 +2848,7 @@
           "version": "1.0.1",
           "bundled": true,
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