Merge branch 'feature/coveralls' into develop

Author: nmicht

package.json

@@ -23,8 +23,7 @@
     "cleanup": "node --no-warnings scripts/cleanup.js",
     "start": "node --no-warnings src/index.js",
     "test": "mocha",
-    "cover": "istanbul cover _mocha",
-    "coveralls": "npm run cover -- --report lcovonly && cat ./coverage/lcov.info | coveralls"
+    "coveralls": "istanbul cover ./node_modules/mocha/bin/_mocha --report lcovonly -- -R spec && cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js && rm -rf ./coverage"
   },
   "engines": {
     "node": ">=10.12.0"