old_contents: 
  import sqlite3
  
  from binder.conn import Connection
  from binder.sqlgen import DIALECT_SQLITE
  
  class SqliteConnection(Connection):
  
      def __init__(self, dbfile, read_only):
          dbconn = sqlite3.connect(dbfile)
          dberror = sqlite3.Error
          Connection.__init__(
              self, dbconn, dberror,
              DIALECT_SQLITE, "?",
              read_only
              )
  
  
new_contents: 
  import sqlite3
  
  from binder.conn import Connection
  from binder.sqlgen import DIALECT_SQLITE
  
  class SqliteConnection(Connection):
  
      def __init__(self, dbfile, read_only=False):
          dbconn = sqlite3.connect(dbfile)
          dberror = sqlite3.Error
          Connection.__init__(
              self, dbconn, dberror,
              DIALECT_SQLITE, "?",
              read_only
              )
  
  
subject: Make SqliteConnection read_only parameter optional