Add CodeQL workflow

Update README

Update Node.js workflow

Fix tests

.github/workflows/codeql-workflow.yml

@@ -0,0 +1,25 @@
+name: CodeQL Workflow
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 15 * * 6'
+jobs:
+  codeql:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 2
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v1
+        with:
+          config-file: ./.github/codeql/codeql-configuration.yml
+          languages: javascript
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v1
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v1

.github/workflows/node-workflow.yml

@@ -24,10 +24,10 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
-      - name: Setup Node.js 15.x
+      - name: Setup Node.js 16.x
         uses: actions/setup-node@v1
         with:
-          node-version: 15.x
+          node-version: 16.x
 
       - name: Install dependencies
         run: npm install
@@ -41,7 +41,14 @@ jobs:
       - name: Run tests
         run: npm test
 
+      - name: Run npm audit
+        run: npm audit
+
       - name: Send Coverage
-        continue-on-error: true
-        timeout-minutes: 1
-        run: curl -s https://codecov.io/bash | bash -s -- -t ${{secrets.CODECOV_TOKEN}} -f coverage/lcov.info -n github-actions-codecov-${{ matrix.operating-system }}
+        uses: codecov/codecov-action@v2
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: coverage/lcov.info
+          name: github-actions-codecov-${{ matrix.operating-system }}
+          fail_ci_if_error: false
+          verbose: true