Dave Pearson: quiz.el v1.6

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A quick little refresh of one of my old packages, this timequiz.el. This is a nice littledistraction when you're working in Emacs, letting youspin up a quick trivia quiz in a buffer.It's backed by the Open Trivia Database, so there'sa good few subjects, questions, and levels of difficulty to play with.The only changes I've made to it in this release are the usual clean-ups ofthe deprecated uses of setf,plus I've added q as a binding to the quiz window to quickly quit thequiz.I might have to come back and revisit it soon, as it looks like the defaultface choices could probably do with a rethink, and I can see at the momentthat the attempt at a window-wide "header" for each question isn't workingany longer. For comparison, here's how the package looked when running backwhen I first wrote it back in 2017:Leaving aside the fact that I was still running a very light Emacsthen, thosequestion headers are displaying differently, with the background colour nolonger spanning the width of the window. I'd like to understand why.