v1.5.0-rc.5

🎆 Final v1.5.0 Release Candidate! 🎆

Unless there are any hiccups, v1.5.0 release to @latest will be in 8-12 days

• watchEvent accepts options object as third argument
• async/await capability added to unit tests
• Material example updated with new build setup including Webpack 3
• npm run test and npm run test:cov commands are now consistent
• package-lock.json added