-r, --read-only
	open notmuch database in read-only mode
-c FILENAME, --config=FILENAME
	configuration file (default: ~/.config/alot/config)
-n FILENAME, --notmuch-config=FILENAME
	notmuch configuration file (default: $NOTMUCH_CONFIG or ~/.notmuch-config)
-C COLOURS, --colour-mode=COLOURS
	number of colours to use on the terminal; must be 1, 16 or 256 (default: configuration option colourmode or 256)
-p PATH, --mailindex-path=PATH
	path to notmuch index
-d LEVEL, --debug-level=LEVEL
	debug level; must be one of debug, info, warning or error (default: info)
-l FILENAME, --logfile=FILENAME
	log file (default: /dev/null)
-h, --help	display help and exit
-v, --version	output version information and exit