fastcached v0.4.0

What's Changed

Features

• Zero-config Windows office fleet by @christianparpart in #1600

Bug fixes

• Reclaim leaked CowTree pages, and prove a failed MSI upgrade rolls back exactly by @christianparpart in #1634
• node: an administrator judges the service's own state as the service, and an unreadable state directory refuses once with its true reason by @christianparpart in #1635

Internals

• Migrate onto core-cpp v0.2.0: the terminal UI, the coroutines, the event loop and every socket by @christianparpart in #1598

Full Changelog: v0.3.0...v0.4.0