Changelog/CLI

• Read and export Gravity Sync (Beta) libraries with the CLI.
• The CLI follows the library you pick in the Mac app, including after you switch accounts.
• gravity list --sort list gives you the list order.
• gravity search lists equal matches newest first.
• Search for a tag on its own, like todo: or --tag todo, to see your newest tagged notes first.
• Search reads past damaged rows and finds every readable match.
• Search paging ends cleanly on the last page.
• Replace imports always save a restorable backup before they change anything.
• gravity sync status tells you which errors need your attention.