INPUT
	DESC	ANSI control sequence
	EXAMPLE	"\x1B[30m"

OUTPUT
	TYPE	1B (ANSI CONTROL SEQUENCE)
	DESC	Input as-is
	EXAMPLE	1B5B33306D

EXAMPLE
	#used in https://github.com/buganini/bug5
	#used with inter/BIG5-DEFRAG
	> perl -e 'print "a\033[1mb"' | bsdconv ansi-control,utf-8:bsdconv-stdout
	0161
	1B5B316D ( FREE )
	0162
