Snowflake agent changelog

More robust error handling;

More robust handling of Snowpipe APIs;

Performance improvements when using INSERT mode during initial snapshot;

Added support for RSA key pair authentication.

New enhanced Snapshots: when using INSERT mode, the agent will use the Snowflake’s Snowpipe API to improve performance.

Improved deletion query.

Added possibility to disable "merge" statement using simple update query.

Changed the way updates are interpreted by the agent, switching over from performing a MERGE statement to use a combination of UPDATE and INSERT;

Added missing timestamp_ltz, timestamp_ntz, timestamp_tz data types;

Fixed missing column exception during columns schema fetch.