Preparing to release python-oracledb 3.4.1.

Preparing to release python-oracledb 3.4.

Preparing to release python-oracledb 3.3.

Preparing to release python-oracledb 3.2.0.

Preparing to release python-oracledb 3.1.1.

Preparing to release python-oracledb 3.1.0.

Preparing to release python-oracledb 3.0.0.

Preparing to release python-oracledb 2.5.1.

Add new environment variable.

Fix bug when detecting in-band notification warning while connection is

being created or actively used (#383).