Simple hierarchical Go logger

• Serializes all logs on a "background" goroutine
• If the output writer is a TTY, use terminal colors (disable by unsetting FColor)
• Hierarchical; SubLogger creates a logger with shared output, level and prefix

Example

func main() {
  log.RootLogger.EnableFeatures(log.FMicroseconds)

  log.Info("Hello")

  log.RootLogger.Level = log.LevelDebug
  log.Debug("Wild %#v", Things{})

  fooLogger := log.SubLogger("[foo]")
  fooLogger.Warn("Danger, Will Robinson")
}

12:54:34.794802 [info] Hello
12:54:34.794826 [debug] Wild Things{Field:0} (log_test.go:18)
12:54:34.794887 [warn] [foo] Danger, Will Robinson

See documentation or log_test.go for more details.