v0.3.0

Changes

• Survey builder redesign with autosave (7191201)
• Vectors in calculations: sums, dot and cross product, magnitude, unit vector and angle (d9f6a04)
• Copy and move records between databases (40ab75f)
• Add view: every display type as a card with a short description (b69c6a5)
• Fixes: no calculation hint before an existing result, images keep their context menu, form actions aligned (6f305cf)

Full changelog: v0.2.0...v0.3.0