Dexter LSP is sending a notification on every save

[ponychicken]

#115 Dexter looks amazing, havent tried it out more yet. But right now on every save there is a notification popping up, which is also obscurring the last line of my terminal, with a content like

"jsonrpc":"2.0","method":"window/showMessage","params":{"message":"Dexter: building index for the first time, go-to-definition will be available shortly...","type":3}}

// Receive:
{"jsonrpc":"2.0","method":"window/showMessage","params":{"message":"Dexter: index built (2684 files in 763ms)","type":3}}

This is a bit annoying as it steals focus and has no actionable information.