v1.16.0

New Features

• Deploy PD as microservices in tiup-cluster (#2377, @rleungx)

Fixes

• Fix missing TiProxy session certs when tiup-cluster scale-out (#2432, @djshow832)

Improvements

• Remove tombstone nodes of pd when executing tiup-cluster prune (#2044, @nexustar)
• Redact -p (password) arguments in command execution (#2425, @nexustar)
• Avoid duplicated downloads when upgrade (#2423, @nexustar)