Instead of keeping a list in the readme (which nobody reads because the readme is already hundreds of lines long) we can just a link to: https://github.com/sindresorhus/refined-github/pulls?q=is%3Apr+in%3Atitle+is%3Amerged+-label%3Ameta+drop+feature

Separately, it might be worth going through some old PRs to ensure that they have the "drop feature" in the title.