0.2.0a20

What's Changed

• groups all config and secret values used by all sources from a single python module in a single section (https://github.com/dlt-hub/dlt/blob/devel/docs/technical/secrets_and_config.md#the-sources-section)
• allows to provide alternatives of credentials for sources with multiple auth methods (https://github.com/dlt-hub/dlt/blob/devel/docs/technical/secrets_and_config.md#working-with-alternatives-of-credentials-union-types)
• gives write access to schemas in the source decorated function to allow to generate/modify settings and tables (https://github.com/dlt-hub/dlt/blob/devel/docs/technical/working_with_schemas.md#schema-is-modified-in-the-source-function-body)
• all generators are closed if there's an exception in the pipe during extraction

Full Changelog: 0.2.0a19...0.2.0a20