# Functions
NewJournalReader creates a new JournalReader with configuration options that are similar to the systemd journalctl tool's iteration and filtering features.
# Variables
ErrExpired gets returned when the Follow function runs into the specified timeout.
# Structs
JournalReader is an io.ReadCloser which provides a simple interface for iterating through the systemd journal.
JournalReaderConfig represents options to drive the behavior of a JournalReader.