Visidata 2.x Anki key sequences deck (for spaced repetitive learning)

[reagle]

With thanks to @jsvine and @anjakefala for their essential documentation and @saulpw for this extraordinary tool and patience, I have a decent version of beginner and intermediate SRL decks available here:

https://github.com/reagle/visidata2-anki

After a month or two, with more practice and tweaking, I expect to upload them to AnkiWeb. (I also hope to amend the merge card once there's closure on #1843.)