Last year, Microsoft made its Roslyn .NET compiler project open source. While it was originally hosted on Microsoft’s own CodePlex site, Microsoft has now shifted it to GitHub.
The move, which has taken place this week, is designed to encourage more participation (to put it bluntly, GitHub has many more users than CodePlex). Microsoft is also streamlining its pull request process as part of the move. More details in the blog post linked below.
We’re moving to GitHub! [C# Frequently Asked Questions Blog]
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