Github Notifier/Work Kit is a Chrome add-on developed by rednosereindeer. It is a free tool that provides notifications, open pull requests, and comments for a quick overview of your GitHub activity.

To use the add-on, you need to obtain your GitHub personal access token with repo authorization checked. You can find instructions on how to create a personal access token on GitHub's website. Once you have your token, simply copy and paste it into the options of the add-on and save.

The add-on allows you to search for repositories by inputting the same string as the organization/repo in your GitHub repository headline. This makes it easier to find and track specific repositories.

In the new version of Github Notifier/Work Kit, the changes include updating the colors of the "work on" button to bright orange, providing a more visually appealing experience. Additionally, a quick link to create a new pull request has been added, making it more convenient to start new collaborations.

A bugfix in the latest version ensures that switching between repositories will display an error if the repository does not exist, preventing any confusion or wasted time.

Overall, Github Notifier/Work Kit is a useful tool for GitHub users who want to stay updated on their notifications, pull requests, and comments in a convenient and efficient manner.