v0.48.0

Changelog

• 621a65d chore: add a better test suite (#354)
• d9eb04a feat: add granular per-panel keymaps (#356)
• cf4b77c feat: add json columns content highlighting (#347)
• 493142d feat: new tabs design and color on focus only (#352)
• 609b067 fix: metadata queries fetch data from pg_catalog (#355)