v0.20.0: A Command Palette That Knows Which Pane You're In, Paste That Works Like a Spreadsheet, and PostgreSQL Moves Out of the Core

v0.20.0 replaces the quick navigator with a scope-aware command palette, teaches the data grid to paste spreadsheet ranges as staged edits, moves PostgreSQL out of the core and into a standalone plugin at full parity with the built-in driver (the first step in migrating every built-in driver to the plugin pipeline), adds inline hex preview and editing for BLOBs, and makes rows with binary primary keys deletable on MySQL.