Notable changes:
- Shutdown hardening. If maxwell can't shut down (because the kafka
producer is in a bad state andclose()never terminates, for example),
it would previously stall and process no messages. Now, shutdown is run
in a separate thread and there is an additional watchdog thread which
forcibly kills the maxwell process if it can't shut down within 10
seconds. - Initial support for running maxwell from java, rather then as its own
process. This mode of operation is still experimental, but we'll
accept PRs to improve it (thanks Geoff Lywood). - Fix incorrect handling of negative (pre-epoch dates) when using
binlog_connector mode (thanks Geoff Lywood).