Log Message:
logswan: Update to 2.0.4.

ChangeLog:

Logswan 2.0.4 (2019-08-16)

- Adding #include guard in compat header file
- Add an example log file and regenerate output example
- Add dependencies installation instructions for NetBSD and FreeBSD
- Add final dots for options descriptions
- Add final dot when printing results summary
- Use EXIT_SUCCESS and EXIT_FAILURE macros for return values
- Add a trailing newline when printing JSON output

OK kamil@