Gets an iterator on the chars of self

Property definitions

	# Gets an iterator on the chars of self
	fun iterator: Iterator[Char]
	do
		return self.chars.iterator
	end

lib/core/text/abstract_text.nit:165,2--169,4

	redef fun iterator do return new RopeCharIterator.from(self, 0)

lib/core/text/ropes.nit:124,2--64