Allow newlines between if/elif/else and similar

[brady444]

With the new formatter rewrite, I am unable to add newlines between my if/elif/else lines:

func test() -> void:
	if true:
		print("one")
	elif true:
		print("two")
	else:
		print("three")

With the old version, this was allowed:

func test() -> void:
	if true:
		print("one")

	elif true:
		print("two")

	else:
		print("three")

Please allow this again or add a config option to toggle this behavior. Thanks!