Emit logs to a predictable location

[ultraq]

Logback is configured to emit logs to a .logs directory in the current working directory. Works fine if it's the project directory, but is annoying if it's from anywhere else. Is there a way to always emit the logs to the project directory? Failing that, they might need to go to somewhere that's predictable, like the temp directory or the user home.

[ultraq]

For now, I'll get them going to ${java.io.tmpdir}/redhorizon/logs/