Thanks for pointing this out. I don't think it's something this little helper library should try to do. This kind of thing belongs in whatever database abstraction you're building/using, if any. It's also a little trickier than it seems at first glance (RETURNING, etc).

And for many no/low concurrency situations there's no/little benefit.

Added this example to the README.

  rwdb, err := sqlitebp.OpenReadWriteCreate("app.db")
  if err != nil {
    log.Fatal(err)
  }
  rwdb.SetMaxOpenConns(1)
  rwdb.SetMaxIdleConns(1)


  // Read-only with default adaptive pool size (2-8 based on GOMAXPROCS)
  rodb, err := sqlitebp.OpenReadOnly("app.db")
  if err != nil {
    log.Fatal(err)
  }