The `else` keyword

Property definitions

	# The `else` keyword
	var n_kwelse: nullable TKwelse = null is writable

src/parser/parser_nodes.nit:2099,2--2100,50

	redef fun n_kwelse=(node)
	do
		_n_kwelse = node
		if node != null then node.parent = self
	end

src/parser/parser_prod.nit:3555,2--3559,4