diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 0000000..90bf727
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,37 @@
+# Javascript Node CircleCI 2.0 configuration file
+#
+# Check https://circleci.com/docs/2.0/language-javascript/ for more details
+#
+version: 2
+jobs:
+  build:
+    docker:
+      # specify the version you desire here
+      - image: circleci/node:lts-browsers
+
+      # Specify service dependencies here if necessary
+      # CircleCI maintains a library of pre-built images
+      # documented at https://circleci.com/docs/2.0/circleci-images/
+      # - image: circleci/mongo:3.4.4
+
+    working_directory: ~/scorm-again
+
+    steps:
+      - checkout
+
+      # Download and cache dependencies
+      - restore_cache:
+          keys:
+            - v1-dependencies-{{ checksum "package.json" }}
+            # fallback to using the latest cache if no exact match is found
+            - v1-dependencies-
+
+      - run: npm install
+
+      - save_cache:
+          paths:
+            - node_modules
+          key: v1-dependencies-{{ checksum "package.json" }}
+
+      # run tests!
+      - run: npm test
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 759bff1..d20c3ac 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -904,15 +904,6 @@
         "source-map-support": "^0.5.16"
       }
     },
-    "@babel/runtime-corejs2": {
-      "version": "7.7.2",
-      "resolved": "https://registry.npmjs.org/@babel/runtime-corejs2/-/runtime-corejs2-7.7.2.tgz",
-      "integrity": "sha512-GfVnHchOBvIMsweQ13l4jd9lT4brkevnavnVOej5g2y7PpTRY+R4pcQlCjWMZoUla5rMLFzaS/Ll2s59cB1TqQ==",
-      "requires": {
-        "core-js": "^2.6.5",
-        "regenerator-runtime": "^0.13.2"
-      }
-    },
     "@babel/template": {
       "version": "7.7.0",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.7.0.tgz",
@@ -993,7 +984,8 @@
     "ansi-regex": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
-      "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg="
+      "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+      "dev": true
     },
     "ansi-styles": {
       "version": "3.2.1",
@@ -1004,11 +996,6 @@
         "color-convert": "^1.9.0"
       }
     },
-    "any-promise": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/any-promise/-/any-promise-1.3.0.tgz",
-      "integrity": "sha1-q8av7tzqUugJzcA3au0845Y10X8="
-    },
     "anymatch": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-2.0.0.tgz",
@@ -1078,27 +1065,12 @@
       "integrity": "sha1-qJS3XUvE9s1nnvMkSp/Y9Gri1Cg=",
       "dev": true
     },
-    "assert-plus": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
-      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
-    },
     "assertion-error": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-1.1.0.tgz",
       "integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
       "dev": true
     },
-    "assertion-error-formatter": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/assertion-error-formatter/-/assertion-error-formatter-3.0.0.tgz",
-      "integrity": "sha512-6YyAVLrEze0kQ7CmJfUgrLHb+Y7XghmL2Ie7ijVa2Y9ynP3LV+VDiwFk62Dn0qtqbmY0BT0ss6p1xxpiF2PYbQ==",
-      "requires": {
-        "diff": "^4.0.1",
-        "pad-right": "^0.2.2",
-        "repeat-string": "^1.6.1"
-      }
-    },
     "assign-symbols": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/assign-symbols/-/assign-symbols-1.0.0.tgz",
@@ -1129,7 +1101,8 @@
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
+      "dev": true
     },
     "base": {
       "version": "0.11.2",
@@ -1186,22 +1159,12 @@
         }
       }
     },
-    "becke-ch--regex--s0-0-v1--base--pl--lib": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/becke-ch--regex--s0-0-v1--base--pl--lib/-/becke-ch--regex--s0-0-v1--base--pl--lib-1.4.0.tgz",
-      "integrity": "sha1-Qpzuu/pffpNueNc/vcfacWKyDiA="
-    },
     "binary-extensions": {
       "version": "1.13.1",
       "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.13.1.tgz",
       "integrity": "sha512-Un7MIEDdUC5gNpcGDV97op1Ywk748MpHcFTHoYs6qnj1Z3j7I53VG3nwZhKzoBZmbdRNnb6WRdFlwl7tSDuZGw==",
       "dev": true
     },
-    "bluebird": {
-      "version": "3.7.1",
-      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.7.1.tgz",
-      "integrity": "sha512-DdmyoGCleJnkbp3nkbxTLJ18rjDsE4yCggEwKNXkeV123sPNfOCYeDoeuOY+F2FrSjO1YXcTU+dsy96KMy+gcg=="
-    },
     "boxen": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/boxen/-/boxen-1.3.0.tgz",
@@ -1229,6 +1192,7 @@
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
       "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dev": true,
       "requires": {
         "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
@@ -1427,16 +1391,6 @@
       "integrity": "sha1-T6kXw+WclKAEzWH47lCdplFocUM=",
       "dev": true
     },
-    "cli-table3": {
-      "version": "0.5.1",
-      "resolved": "https://registry.npmjs.org/cli-table3/-/cli-table3-0.5.1.tgz",
-      "integrity": "sha512-7Qg2Jrep1S/+Q3EceiZtQcDPWxhAvBw+ERf1162v4sikJrvojMHFqXt8QIVha8UlH9rgU0BeWPytZ9/TzYqlUw==",
-      "requires": {
-        "colors": "^1.1.2",
-        "object-assign": "^4.1.0",
-        "string-width": "^2.1.1"
-      }
-    },
     "cliui": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
@@ -1501,16 +1455,6 @@
       "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
       "dev": true
     },
-    "colors": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/colors/-/colors-1.4.0.tgz",
-      "integrity": "sha512-a+UqTh4kgZg/SlGvfbzDHpgRu7AAQOmmqRHJnxhRZICKFUT91brVhNNt58CMWU9PsBbv3PDCZUHbVxuDiH2mtA=="
-    },
-    "commander": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-3.0.2.tgz",
-      "integrity": "sha512-Gar0ASD4BDyKC4hl4DwHqDrmvjoxWKZigVnAbn5H1owvm4CxCPdb0HQDehwNYMJpla5+M2tPmPARzhtYuwpHow=="
-    },
     "commondir": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/commondir/-/commondir-1.0.1.tgz",
@@ -1526,7 +1470,8 @@
     "concat-map": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
+      "dev": true
     },
     "configstore": {
       "version": "3.1.2",
@@ -1574,11 +1519,6 @@
       "integrity": "sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=",
       "dev": true
     },
-    "core-js": {
-      "version": "2.6.10",
-      "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.10.tgz",
-      "integrity": "sha512-I39t74+4t+zau64EN1fE5v2W31Adtc/REhzWN+gWRRXg6WH5qAsZm62DHpQ1+Yhe4047T55jvzz7MUqF/dBBlA=="
-    },
     "core-js-compat": {
       "version": "3.4.0",
       "resolved": "https://registry.npmjs.org/core-js-compat/-/core-js-compat-3.4.0.tgz",
@@ -1600,7 +1540,8 @@
     "core-util-is": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
-      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
+      "dev": true
     },
     "cp-file": {
       "version": "6.2.0",
@@ -1641,63 +1582,6 @@
       "integrity": "sha1-ojD2T1aDEOFJgAmUB5DsmVRbyn4=",
       "dev": true
     },
-    "cucumber": {
-      "version": "6.0.3",
-      "resolved": "https://registry.npmjs.org/cucumber/-/cucumber-6.0.3.tgz",
-      "integrity": "sha512-FSx7xdAQfFjcxp/iRBAuCFSXp2iJP1tF2Q5k/a67YgHiYbnwsD9F+UNv9ZG90LFHNsNQhb+67AmVxHkp4JRDpg==",
-      "requires": {
-        "assertion-error-formatter": "^3.0.0",
-        "bluebird": "^3.4.1",
-        "cli-table3": "^0.5.1",
-        "colors": "^1.1.2",
-        "commander": "^3.0.1",
-        "cucumber-expressions": "^8.0.1",
-        "cucumber-tag-expressions": "^2.0.2",
-        "duration": "^0.2.1",
-        "escape-string-regexp": "^2.0.0",
-        "figures": "^3.0.0",
-        "gherkin": "5.0.0",
-        "glob": "^7.1.3",
-        "indent-string": "^4.0.0",
-        "is-generator": "^1.0.2",
-        "is-stream": "^2.0.0",
-        "knuth-shuffle-seeded": "^1.0.6",
-        "lodash": "^4.17.14",
-        "mz": "^2.4.0",
-        "progress": "^2.0.0",
-        "resolve": "^1.3.3",
-        "serialize-error": "^4.1.0",
-        "stack-chain": "^2.0.0",
-        "stacktrace-js": "^2.0.0",
-        "string-argv": "^0.3.0",
-        "title-case": "^2.1.1",
-        "util-arity": "^1.0.2",
-        "verror": "^1.9.0"
-      }
-    },
-    "cucumber-expressions": {
-      "version": "8.1.0",
-      "resolved": "https://registry.npmjs.org/cucumber-expressions/-/cucumber-expressions-8.1.0.tgz",
-      "integrity": "sha512-mOrAa/i/8uc6guMbrEqftt3FiXgpCngwQpqQmoPAYWNLNttSpXz5JwwLNTk99bTlHhJIMdGe3QR2v3tu6kBHLA==",
-      "requires": {
-        "becke-ch--regex--s0-0-v1--base--pl--lib": "^1.4.0",
-        "xregexp": "^4.2.4"
-      }
-    },
-    "cucumber-tag-expressions": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/cucumber-tag-expressions/-/cucumber-tag-expressions-2.0.2.tgz",
-      "integrity": "sha512-DohmT4X641KX/sb96bdb7J2kXNcQBPrYmf3Oc5kiHCLfzFMWx/o2kB4JvjvQPZnYuA9lRt6pqtArM5gvUn4uzw=="
-    },
-    "d": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/d/-/d-1.0.1.tgz",
-      "integrity": "sha512-m62ShEObQ39CfralilEQRjH6oAMtNCV1xJyEx5LpRYUVN+EviphDgUc/F3hnYbADmkiNs67Y+3ylmlG7Lnu+FA==",
-      "requires": {
-        "es5-ext": "^0.10.50",
-        "type": "^1.0.1"
-      }
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@@ -1793,11 +1677,6 @@
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-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/diff/-/diff-4.0.1.tgz",
-      "integrity": "sha512-s2+XdvhPCOF01LRQBC8hf4vhbVmI2CGS5aZnxLJlT5FtdhPCDFq80q++zK2KlrVorVDdL5BOGZ/VfLrVtYNF+Q=="
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@@ -1813,15 +1692,6 @@
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-      "version": "0.2.2",
-      "resolved": "https://registry.npmjs.org/duration/-/duration-0.2.2.tgz",
-      "integrity": "sha512-06kgtea+bGreF5eKYgI/36A6pLXggY7oR4p1pq4SmdFBn1ReOL5D8RhG64VrqfTTKNucqqtBAwEj8aB88mcqrg==",
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@@ -1843,14 +1713,6 @@
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@@ -1880,46 +1742,12 @@
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-      "resolved": "https://registry.npmjs.org/es5-ext/-/es5-ext-0.10.52.tgz",
-      "integrity": "sha512-bWCbE9fbpYQY4CU6hJbJ1vSz70EClMlDgJ7BmwI+zEJhxrwjesZRPglGJlsZhu0334U3hI+gaspwksH9IGD6ag==",
-      "requires": {
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-        "es6-symbol": "~3.1.2",
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       "dev": true
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-    "es6-iterator": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/es6-iterator/-/es6-iterator-2.0.3.tgz",
-      "integrity": "sha1-p96IkUGgWpSwhUQDstCg+/qY87c=",
-      "requires": {
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-        "es5-ext": "^0.10.35",
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-    "es6-symbol": {
-      "version": "3.1.3",
-      "resolved": "https://registry.npmjs.org/es6-symbol/-/es6-symbol-3.1.3.tgz",
-      "integrity": "sha512-NJ6Yn3FuDinBaBRWl/q5X/s4koRHBrgKAu+yGI6JCBeiu3qrcbJhwT2GeR/EXVfylRk8dpQVJoLEFhK+Mu31NA==",
-      "requires": {
-        "d": "^1.0.1",
-        "ext": "^1.1.2"
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-    "escape-string-regexp": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-2.0.0.tgz",
-      "integrity": "sha512-UpzcLCXolUWcNu5HtVMHYdXJjArjsF9C0aNnquZYY4uW/Vu0miy5YoWvbV345HauVvcAUnpRuhMMcqTcGOY2+w=="
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@@ -1990,21 +1818,6 @@
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-      "resolved": "https://registry.npmjs.org/ext/-/ext-1.2.0.tgz",
-      "integrity": "sha512-0ccUQK/9e3NreLFg6K6np8aPyRgwycx+oFGtfx1dSp7Wj00Ozw9r05FgBRlzjf2XBM7LAzwgLyDscRrtSU91hA==",
-      "requires": {
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-          "resolved": "https://registry.npmjs.org/type/-/type-2.0.0.tgz",
-          "integrity": "sha512-KBt58xCHry4Cejnc2ISQAF7QY+ORngsWfxezO68+12hKV6lQY8P/psIkcbjeHWn7MqcgciWJyCCevFMJdIXpow=="
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@@ -2091,26 +1904,6 @@
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-      "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.4.0.tgz",
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-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/figures/-/figures-3.1.0.tgz",
-      "integrity": "sha512-ravh8VRXqHuMvZt/d8GblBeqDMkdJMBdv/2KntFH+ra5MXkO7nxNKpzQ3n6QD/2da1kH0aWmNISdvhM7gl2gVg==",
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@@ -2217,7 +2010,8 @@
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+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
+      "dev": true
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@@ -2797,15 +2591,11 @@
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+      "dev": true,
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@@ -3019,15 +2809,11 @@
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-      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
-      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
-      "requires": {
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       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
@@ -5398,7 +5023,8 @@
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       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+      "dev": true
     },
     "write-file-atomic": {
       "version": "2.4.3",
@@ -5417,14 +5043,6 @@
       "integrity": "sha1-SWsswQnsqNus/i3HK2A8F8WHCtQ=",
       "dev": true
     },
-    "xregexp": {
-      "version": "4.2.4",
-      "resolved": "https://registry.npmjs.org/xregexp/-/xregexp-4.2.4.tgz",
-      "integrity": "sha512-sO0bYdYeJAJBcJA8g7MJJX7UrOZIfJPd8U2SC7B2Dd/J24U0aQNoGp33shCaBSWeb0rD5rh6VBUIXOkGal1TZA==",
-      "requires": {
-        "@babel/runtime-corejs2": "^7.2.0"
-      }
-    },
     "y18n": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",