Queen Vinyl Da.i'gyu-Kazotetsu

> A question: does this lead to a new major release? No, this actually does not change the schema! To the end user, they'll just see a few notes change,...

> We don't even document if something is available only in secure context. Actually, this statement is false. For features gated behind a secure context, we add a `secure_context_required` feature....

Hey @Rob--W, looks like this has been waiting on your review for a while!

I think that so long as the browser compatibility data is up to date, then we should be fine on that front. Web extensions don't have a standard specification that...

This PR has been sitting around in need of a review for a while, and is the second oldest PR open. We should get this reviewed and landed, or close...

I've just pushed a commit to stick with the three existing noteblock types, but I've kept the styling, new icons, etc. in place so that we can easily add them...

> let's remove support for the others. The other three are disabled, so only the three we actively use are supported. There is simply code and assets available for when...

The code from other noteblocks has now been removed -- I'll create another PR that includes that spliced-out code/data as a sort of proposal, so if we do want to...

> Can you clarify what you mean by "nearly identical"? Are there differences that would lead to changes in what is shown in BCD tables? When I say "nearly identical",...

CC @caugner @fiji-flo -- this change is a very simple one that fixes a major accessibility issue.