Pick a mime type?

[bollwyvl]

So the back story of why jupter_lsp wants to talk over text/plain: it's what the kernel says it wants!

While we'll go ahead and try to do a better job on that end, discrete mime types, even if they are not defined by the IANA, certainly help a lot as they have the intent to aid in machine-level integration. I don't want to put this all on robotkernel, as it would no doubt benefit the whole community, but...

[datakurre]

🙈

[datakurre]

Fixed in 2aef02f