Option to avoid using `flush()` on broken servers. When sending raw data, such as file downloads, we use PHP's flush() function to indicate to the web server to start pushing the data to the user. We have found a stark minority of servers which are misconfigured, causing the web server software to crash when it receives data before PHP has done executing. If you are that single person we saw once in the past seventeen and a half years on that broken server, now there's a setting in the software's System Preferences page to disable this behaviour.
Bug fixes and minor improvements. Please take a look at the CHANGELOG below.