Python v0.15.1

What's Changed

• Fix notifcation by @noaKurman in #1512
• bugfix to BQ alerts by @haritamar in #1516
• Ele 3035 docs to master by @haritamar in #1518
• remove refs to information_schema_columns by @haritamar in #1519
• Ele 3040 update cli to use new package version by @haritamar in #1521
• release/v0.15.1 by @github-actions in #1522

Full Changelog: v0.15.0...v0.15.1