I wish the Github UI had an user experience like this. I do a lot of directory tree navigation in the GH interface these days, while searching for algorithms and examples for a new project and it's horrible how much time I'm wasting on clicking into and stepping back out of folders trying to get a glimpse of whats in them. The lack of file sizes and filetype icons make it even worse. GH file navigation feels like a step back from where we already were in 1986 with Norton Commander.