[folding] context menu on expand/collapse arrow

[b3wii]

It would be nice if you can right click on expand/collapse code block arrow to get small menu to collapse/expand all blocks:

[Adn0s]

How about a double arrow for expanding all blocks that shows up when you hover next to the single arrow

[gjsjohnmurray]

For the moment you might be interested in this little extension I wrote.