Helps focus on individual files by enabling collapsible files views.

github-collapsible-diff-files.js

// ==UserScript==
// @name       GitHub Diff File Toggle Slide
// @version    0.3
// @description  Helps focus on individual files by collapsing and uncollapsing.
// @match      https://github.com/*/*/commit/*
// @copyright  2013+, Tim A. Perez
// ==/UserScript==
$(function(){
    setTimeout(function(){
        $('#files').children('.file').children('.meta').click(function(){
          $(this).next().slideToggle('fast');
        }).next().slideUp(0);
    },300);
});