Version 3

Version 3 of this deck has been released. It doesn't do anything different from what it was doing before, but the code has been simplified following tips from the Internet Janitor.  Part of the old code is still there, commented and with explanations for my own benefit, but it might help some people understand a few more complex things, like lists and the toggle for some widgets.

One new thing, though, is the addition of a contraption that can be imported as a resource from this deck into a new one, allowing to import images with color into the deck, and also exporting the result as a static gif to be shared online. The benefit here is to make it easier to include images with color in new decks without having to code stuff again. To use it, just create a new deck and import the... erm, Importer, using the Resources menu, and then look for it among the Contraption widgets.

Also, the "secret" card with the import/export function in this deck is now accessible either by clicking on the "End" text at the end of the deck, or on the title "The Steppe" in the first card.