The `yield` keyword

Property definitions

	# The `yield` keyword
	var n_kwyield: nullable TKwyield = null is writable

src/parser/parser_nodes.nit:1891,2--1892,52

	redef fun n_kwyield=(node)
	do
		_n_kwyield = node
		node.parent = self
	end

src/parser/parser_prod.nit:2806,2--2810,4