v0.4.0

Added

• Prompt evolution metrics can now be exported as JSON or CSV, including version-level aggregates and provider breakdowns

Changed

• Refined README package presentation and updated the install snippet for the current release line
• Updated ecto and ecto_sql to 3.14.0, phoenix_live_view to 1.1.30, postgrex to 0.22.2, req to 0.5.18, req_llm to 1.12.0, llm_db to 2026.5.1, and ex_doc to 0.40.3

Fixed

• Prompt evolution CSV exports now quote control characters and neutralize spreadsheet formula prefixes in text fields