Merge branch 'master' into greenkeeper/mocha-7.0.1

Author: jochen-testingbot

package.json

@@ -10,12 +10,12 @@
     "build": "babel lib -d build"
   },
   "dependencies": {
-    "async": "^2.1.4"
+    "async": "^3.1.1"
   },
   "devDependencies": {
     "babel-cli": "^6.0.0",
     "babel-preset-env" : "^1.6.1",
-    "eslint": "^5.0.0",
+    "eslint": "^6.8.0",
     "mocha": "^7.0.1",
     "mocha": "^7.0.1",
     "mocha-junit-reporter": "^1.15.0"