The uhm is unnecessary; I don't see any screenshots on the GitHub page, linked or otherwise. The page linked from the website is https://github.com/mattermost/platform.
For third-party services, I'm talking about things that matter for getting work done. For example, issue trackers like JIRA.
For third-party services, I'm talking about things that matter for getting work done. For example, issue trackers like JIRA.