chore(test): Do not run selenium in parallel ever

Author: Droogans

test/package.json

@@ -22,7 +22,7 @@
     "lint": "tslint -c tslint.json visreg/",
     "pretest": "npm run build",
     "test": "npm run test:regression && npm run test:visreg",
-    "test:regression": "ava node built/regression/generateRegressionTests.js --verbose",
+    "test:regression": "ava node built/regression/generateRegressionTests.js --verbose --serial",
     "test:visreg": "ava built/visreg/{chrome,firefox}.js --verbose --serial",
     "postinstall": "[ -f bin/visreg.config.ts ] || cp bin/visreg.example.config.ts bin/visreg.config.ts",
     "previsreg": "npm run clean:visreg",