Exercise to study process death

$ iex -S mix

iex> :observer.start
# Check applications in observer
# Right click on processes and send messages or kill them with apt reasons (check lib/main.ex for valid messages)

Observations

	Process not trapping exit	Process trapping exit
Exception inside process	Dies and kills linked processes	Dies and kills linked processes
Process.exit(self, :kill) inside process	Dies and kills linked processes	Dies and kills linked processes
Process.exit(self, :normal) inside process	Dies, does not kill linked processes	Does not die, receives message {:EXIT, from, :normal}
Process.exit(self, :some_reason) inside process	Dies and kills linked processes	Does not die, receives message {:EXIT, from, :some_reason}
Process.exit(pid, :kill) from outside	Dies and kills linked processes	Dies and kills linked processes
Process.exit(pid, :normal) from outside	Does not die, no message received	Does not die, receives message {:EXIT, from, :normal}
Process.exit(pid, :some_reason) from outside	Dies and kills linked processes	Does not die, receives message {:EXIT, from, :some_reason}