Slack developer Felix Rieseberg released Windows 95 as an Electron app four years ago and updated it shortly after to run classic games like Doom. Now he comes with a new version that can run on just about any Windows, Mac or Linux system. Rieseberg’s Windows 95 is based on the Electron framework and is written entirely in JavaScript. So it does not run as smoothly as a native app, but that should not deter the true enthusiast. The second update…