Open the connnection with the database using the conninfo

Property definitions

postgresql $ Postgres :: open
  # Open the connnection with the database using the `conninfo`
  init open(conninfo: Text)
  do
    init(new NativePostgres.connectdb(conninfo))
    if native_connection.status.is_ok then is_closed = false
  end
lib/postgresql/postgres.nit:66,3--71,5