Release v0.2.24

What's Changed

• feat: encryption at rest for messages and contacts, and API for reading by @zackb in #114
• fix: don't install ufw and firewalld rules if they are not installed by @zackb in #119
• fix: improve diagnostics by @zackb in #120
• fix: linux to linux reconnect, explicit forget_device by @zackb in #121
• fix: make tray work on GNOME shell AppIndicator by @zackb in #122
• fix: add version string to UI by @zackb in #123
• feat(gtk): contacts tab in UI by @zackb in #124
• fix: encryption migration safeguards by @zackb in #125

Full Changelog: v0.2.23...v0.2.24