Log Message:
py-logbook: updated to 1.4.3

Version 1.4.3
- Fixed Pypi release for 1.4.2

Version 1.4.2
- Use correct record delimiters (null for UNIX, newline for network) in SyslogHandler
- Try to reconnect to SyslogHandler TCP sockets when they are disconnected
- Use RFC 5424 format for networking logging in SyslogHandler