Cannot flush logs before process ends

[JADurham909]

I have noticed that when a process ends, not all the logs are written because they are still in the buffer. File transport has a flush event you can hook on to prevent this. This transport does not offer the same, so I have had to do something like this...

//allow papertrail to flush the buffer
setTimeout(() => {
    logger.info('lambda#handler: success');
    context.succeed('success');
}, 1000);

[jortizsao]

Yes, I have the same issue. Would be great if you can hook this flush event

[troy]

This was implemented in #62 as the flushOnClose option.