Since MariaDB Connector/C 3.3.0 host parameter may contain multiple hosts,
separated by a comma for simple failover. If MariaDB Connector/Python uses
a MariaDB Connector/C library < 3.3.0 an exception will be raised if host
parameter contains a comma.
Display status of connection, cursor and pool class in
string representation.
If an object (cursor, class, connection pool) was closed, the
string representation (tp_repr) now shows the status of the object.
Example:
>>> import mariadb
>>> connection=mariadb.connect()
>>> connection
<mariadb.connection connected to 'localhost' at 0x7f94d77c3b40>
>>> connection.close()
>>> connection
<mariadb.connection (closed) at 0x7f94d77c3b40>
Due to several incompatibilites (but also MDEV-23768, where errors
can't be triggered in unbuffered) we decided to switch the default
mode for cursor class for buffered from False to True.
