Release 4.2.0

• Adds a new watch method on RemoteMongoCollection for the browser SDK and Node.js SDK. watch provides the ability to open a change stream against a collection to get real-time updates about changes that happen on specific documents.
  • This feature is not supported on React Native due to a lack of mature support for server-event events on that platform. If you’d like real-time updates in a React Native application, we recommend building a native module using our iOS and Android SDKs, which offer beta functionality for MongoDB Mobile Sync, and will soon offer similar watch functionality
• Improved README files
• Fixed various internal issues