- customizable icons #487
- folder menu: "folder size" #535
- admin/options: new "Outbound proxy" #812
- admin/accounts: new "Allowed network address" #864
- admin: syntax highlight for html, css, js, yaml
- env DISABLE_UPDATE (for containers)
- plugins: api.setError
- other minor improvements
Full Changelog: v0.55.3...v0.56.0-alpha1