~~foobar~~
~~foo
bar~~
~foobar~
~foo
bar~

~foo*bar*baz~
~foo__bar__baz~
~foo[bar](baz)~

----------------------------------------------------

[
	["strike", [
		["punctuation", "~~"],
		"foobar",
		["punctuation", "~~"]
	]],
	["strike", [
		["punctuation", "~~"],
		"foo\r\nbar",
		["punctuation", "~~"]
	]],
	["strike", [
		["punctuation", "~"],
		"foobar",
		["punctuation", "~"]
	]],
	["strike", [
		["punctuation", "~"],
		"foo\r\nbar",
		["punctuation", "~"]
	]],

	["strike", [
		["punctuation", "~"],
		"foo",
		["italic", [
			["punctuation", "*"],
			"bar",
			["punctuation", "*"]
		]],
		"baz",
		["punctuation", "~"]
	]],
	["strike", [
		["punctuation", "~"],
		"foo",
		["bold", [
			["punctuation", "__"],
			"bar",
			["punctuation", "__"]
		]],
		"baz",
		["punctuation", "~"]
	]],
	["strike", [
		["punctuation", "~"],
		"foo",
		["url", [
			"[bar](baz)"
		]],
		["punctuation", "~"]
	]]
]

----------------------------------------------------

Checks for strike. Also tests for inclusion of bold, italic, and url.