diff --git a/package-lock.json b/package-lock.json
index ebfba23..176c1e9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -167,6 +167,12 @@
         "tslib": "^1.8.1"
       }
     },
+    "@tootallnate/once": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@tootallnate/once/-/once-1.1.2.tgz",
+      "integrity": "sha512-RbzJvlNzmRq5c3O09UipeuXno4tA1FE6ikOjxZK0tuxVv3412l64l5t1W5pj4+rJq9vpkm/kwiR07aZXnsKPxw==",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.1.4.tgz",
@@ -471,6 +477,32 @@
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+      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
+      "integrity": "sha512-RZNwNclF7+MS/8bDg70amg32dyeZGZxiDuQmZxKLAlQjr3jGyLx+4Kkk58UO7D2QdgFIQCovuSuZESne6RG6XQ==",
+      "dev": true,
+      "requires": {
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+      },
+      "dependencies": {
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+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
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+          "dev": true,
+          "requires": {
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+          }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
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+          "dev": true
+        }
+      }
+    },
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       "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
@@ -494,6 +526,7 @@
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       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
       "dev": true,
+      "optional": true,
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         "longest": "^1.0.1",
@@ -852,7 +885,7 @@
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@@ -1575,108 +1608,26 @@
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+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/codecov/-/codecov-3.8.3.tgz",
+      "integrity": "sha512-Y8Hw+V3HgR7V71xWH2vQ9lyS358CbGCldWlJFR0JirqoGtOoas3R3/OclRTvgUYFK29mmJICDPauVKmpqbwhOA==",
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-        "argv": "^0.0.2",
-        "ignore-walk": "^3.0.1",
-        "request": "^2.87.0",
-        "urlgrey": "^0.4.4"
+        "argv": "0.0.2",
+        "ignore-walk": "3.0.4",
+        "js-yaml": "3.14.1",
+        "teeny-request": "7.1.1",
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-          "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
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-          "integrity": "sha1-muzZJRFHcvPZW2WmCruPfBj7rOE=",
+        "js-yaml": {
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+          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz",
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-          "resolved": "https://registry.npmjs.org/request/-/request-2.87.0.tgz",
-          "integrity": "sha512-fcogkm7Az5bsS6Sl0sibkbhcKsnyon/jV1kF3ajGmF0c8HrttdKTPRT9hieOaQHA5HEq6r8OyWOo/o781C1tNw==",
-          "dev": true,
-          "requires": {
-            "aws-sign2": "~0.7.0",
-            "aws4": "^1.6.0",
-            "caseless": "~0.12.0",
-            "combined-stream": "~1.0.5",
-            "extend": "~3.0.1",
-            "forever-agent": "~0.6.1",
-            "form-data": "~2.3.1",
-            "har-validator": "~5.0.3",
-            "http-signature": "~1.2.0",
-            "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": "^2.1.0",
-            "qs": "~6.5.1",
-            "safe-buffer": "^5.1.1",
-            "tough-cookie": "~2.3.3",
-            "tunnel-agent": "^0.6.0",
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-          "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
-          "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
-          "dev": true,
-          "requires": {
-            "safe-buffer": "^5.0.1"
+            "argparse": "^1.0.7",
+            "esprima": "^4.0.0"
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@@ -2374,6 +2325,15 @@
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       "dev": true
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+    "fast-url-parser": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/fast-url-parser/-/fast-url-parser-1.1.3.tgz",
+      "integrity": "sha512-5jOCVXADYNuRkKFzNJ0dCCewsZiYo0dz8QNYljkOpFC6r2U4OBmKtvm/Tsuh4w1YYdDqDb31a8TVhBJ2OJKdqQ==",
+      "dev": true,
+      "requires": {
+        "punycode": "^1.3.2"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/filename-regex/-/filename-regex-2.0.1.tgz",
@@ -2530,7 +2490,8 @@
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           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -2551,12 +2512,14 @@
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           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -2571,17 +2534,20 @@
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           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -2698,7 +2664,8 @@
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           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -2710,6 +2677,7 @@
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           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -2724,6 +2692,7 @@
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           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -2731,12 +2700,14 @@
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           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.2.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -2755,6 +2726,7 @@
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           "dev": true,
+          "optional": true,
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@@ -2835,7 +2807,8 @@
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           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
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@@ -2847,6 +2820,7 @@
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           "bundled": true,
           "dev": true,
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@@ -2932,7 +2906,8 @@
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+          "dev": true,
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@@ -2968,6 +2943,7 @@
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@@ -2987,6 +2963,7 @@
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@@ -3030,12 +3007,14 @@
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           "version": "1.0.2",
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-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "3.0.2",
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+          "dev": true,
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@@ -3336,12 +3315,6 @@
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       "dev": true
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+    "http-proxy-agent": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/http-proxy-agent/-/http-proxy-agent-4.0.1.tgz",
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+      "dev": true,
+      "requires": {
+        "@tootallnate/once": "1",
+        "agent-base": "6",
+        "debug": "4"
+      },
+      "dependencies": {
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+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
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+          "dev": true,
+          "requires": {
+            "ms": "2.1.2"
+          }
+        },
+        "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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@@ -3374,6 +3375,33 @@
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+    "https-proxy-agent": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.1.tgz",
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+      "dev": true,
+      "requires": {
+        "agent-base": "6",
+        "debug": "4"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.3.4",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
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+          "dev": true,
+          "requires": {
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+        "ms": {
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+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
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+        }
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@@ -3387,9 +3415,9 @@
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@@ -3910,7 +3938,8 @@
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@@ -4272,6 +4301,15 @@
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+    "node-fetch": {
+      "version": "2.6.7",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.7.tgz",
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+      "dev": true,
+      "requires": {
+        "whatwg-url": "^5.0.0"
+      }
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@@ -4369,6 +4407,7 @@
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@@ -5311,7 +5350,8 @@
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@@ -7595,6 +7635,15 @@
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+      "resolved": "https://registry.npmjs.org/stream-events/-/stream-events-1.0.5.tgz",
+      "integrity": "sha512-E1GUzBSgvct8Jsb3v2X15pjzN1tYebtbLaMg+eBOUOAxgbLoSbT2NS91ckc5lJD1KfLjId+jXJRgo0qnV5Nerg==",
+      "dev": true,
+      "requires": {
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+      }
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@@ -7658,6 +7707,12 @@
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+    "stubs": {
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+      "resolved": "https://registry.npmjs.org/stubs/-/stubs-3.0.0.tgz",
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