🤖 Formatting as you type now sticks to the basics — **bold**, *italics*,
`code` and ~strikethrough~ — and `_underscores_` make italics too. Typing
"- " or "> " no longer converts into lists and quotes while you compose
(those still render beautifully when a bot sends them, and in older
messages). And turning "Format as you type" off now means exactly what it
says: your asterisks and underscores stay ordinary characters for everyone
reading, and only the formatting shortcuts (⌘B, ⌘I and friends) style text.