-r, --read-only
	open db in read only mode
-c, --config=FILENAME
	config file (default: ~/.config/alot/config)
-n, --notmuch-config=FILENAME
	notmuch config (default: $NOTMUCH_CONFIG or ~/.notmuch-config)
-C, --colour-mode=COLOUR
	terminal colour mode (default: 256). Must be 1, 16 or 256
-p, --mailindex-path=PATH
	path to notmuch index
-d, --debug-level=LEVEL
	debug log (default: info). Must be one of debug,info,warning or error
-l, --logfile=FILENAME
	logfile (default: /dev/null)
-v, --version	Display version string and exit
-h, --help	Display help and exit