Background:
When working in VS Code, it is impossible today to know when there are changes to Pull Requests that you care about. Typically users must rely on email notifications or notifications on the GitHub website for that detail.

Solution:
To reduce context switching between GitHub.com and email, it would be great to provide notifications in the Pull Requests extension to call attention to when there are changes to be aware of.

Examples of notifications can include:

• When someone comments on your PR
• When someone leaves a review on your PR
• When you are requested to review a PR
• When there are changes to PRs for a repo you watch
• When new PRs are created