v0.5.2

[0.5.2] - 2026-03-16

Added

• XqliteNIF.query_with_changes/3 and query_with_changes_cancellable/4
  — return rows plus the sqlite3_changes() count in one atomic call,
  captured inside the connection Mutex so the count cannot be stolen by
  an intervening statement. Zero for non-DML results (detected by empty
  column list).
• Xqlite.query/3 high-level wrapper that returns an
  %Xqlite.Result{} with a populated changes field.
• Xqlite.Result gained a changes field.