Current WIP in lua_sandbox_extensions:
- systemd socket activation support in input/udp #55
- luaposix (needed for fsync, non-blocking file read, chown/chmod, ...)
#37#53 - a rsylog like output #38
- wall output #44
- TZ support in syslog_file output. not easy:
- os.date() uses the TZ environment variable.
- but posix.setenv() is not thread-safe
- alternatively, we can set TZ on the hindsight side, and use ''os.date("!%b %d %H:%M:%S", ts)'' (! means UTC, see http://lua-users.org/wiki/OsLibraryTutorial). Proposed as [lua_sandbox#163](https://github.com/mozilla-services/lua_sandbox/p