Release Pyqldb v3.0.0rc2

Release 3.0.0rc2

Note: This version is a release candidate and may not be production ready.

Bug Fixes:

• Fixed bug which leads to infinite number of retries when a transaction expires.
• Fixed bug which causes transaction to remain open when an unknown exception is thrown inside execute_lambda.
• Added a limit to the number of times the driver will try to get(from pool)/create a session.