This is a small maintenance release that adds a "skip" feature. This allows you to skip over the 20 second wait when the message pops up after you have been away for a while. I will leave it to you to do the right thing by your eyes; don't "skip" when you should be taking a 20 second break.
Also, updated this page to include older versions and a feedback link (above).
Get the executable or the zip file.