Write through a diode queue so a slow writer never blocks the
caller
Aliases allow multiple loggers to have their level set at the same time
The "main" logger is a default normal logger "" is rewritten to "main"
The ALL pseudo-logger controls the default logger level
FormatInt formats human readable numbers
Supply a flag.Value for parsing a cli flag
logger names preserve case. Prefer functions over setting values directly
Tests are included
Timmy Welch
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