Catch All PostgreSQL Notices

[ondrej-bouda]

• Ivory catches all exceptions raised by PostgreSQL. As for notices, though, only the last notice is currently available due to the limitations of the pgsql extension.
• Try to find a way to catch all notices raised for each statement, not just the last one.
• E.g., consider file tracing, preferably to a memory-mapped file, and process the file asynchronously, apart from the application itself. Then, write some custom information to the log file, like the stack trace.
• Alternatively, consider extending the pgsql extension.