Compose with Markdown in Google Docs
From workspaceupdates.googleblog.com:
In Google Docs, you can now select “Automatically detect Markdown” from Tools > Preferences to enable auto correcting for Markdown syntax, a lightweight markup language for applying formatting using plain text.
A few more days and I will have thought this was an April fools joke. I absolutely see myself using it, but it also seems to defeat the purpose.