Remove bindings dependency (require the built addon directly because the build output location is well-known and constant)

Add note about a possible error and its solution to the README
Improve .editorconfig
Run tests in CI workflow

.github/workflows/ci.yml

@@ -21,3 +21,5 @@ jobs:
         if: matrix.os == 'ubuntu-latest'
       - name: Compile
         run: npm install --verbose
+      - name: Run tests
+        run: npm test