I personally wish Github would incorporate a full-feature Electron-based IDE into their system; they do have an online editor, but it is fairly simplistic. Good enough for quick edits, but I wouldn't want to dev in it (then again, I started my professional career in software development sitting in front of a VT220 using a line-based editor; it got bad enough that me and my mentor had a "contest" on who could write a better full-screen code editor - honestly, we both won in a way).