v2.0.0-beta4

What's Changed

• Fix Airport Utility support on NetBSD 4 devices by no longer killing Apple's mDNSResponder process
• Added tcapsule fsck to repair corrupted drives
• Hardened deploy after reboot: deploy now waits for managed smbd to actually finish starting before post-deploy verification
• Refactored start-samba.sh to use a cleaner state-machine structure, and waits for Apple-mounted volumes first