Often the lines of code on Github are too long to fit within the fixed 920px width. This extension will take full advantage of your screen and show the code in 100% width! It works for all content on Github: PRs, commits, Gists, etc.
It is easy to toggle the width on/off whenever you need it – it even comes with a nice transition.
Bugs: https://github.com/sqren/github-widescreen/issues
Fork: https://github.com/sqren/github-widescreen