Add ability to view and link to Markdown source #946

There's no way to view the source of Markdown files inside the GitHub UI. All you can do is click "Raw" to view the raw file.

A trick I discovered is to click "Blame". Then you can view the source of Markdown and even link to specific lines.

Would be nice to add a "Source" button when viewing a rendered Markdown file, which would go to the blame view, but add a query param that instructs Refined GitHub to tweak the UI, like removing the blame components, so it's a clean source view.

For anyone that wants this, please also send this feature request to GitHub: support@github.com