---
foo: 0xBadFace
bar: 0o754
baz: 42
foo: 3.14159
bar: 4e8
baz: 3.1E-7
foo: 0.4e+2
bar: -0xFF
baz: +0o123

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

[
	["punctuation", "---"],
	["key", "foo"], ["punctuation", ":"],
	["number", "0xBadFace"],
	["key", "bar"], ["punctuation", ":"],
	["number", "0o754"],
	["key", "baz"], ["punctuation", ":"],
	["number", "42"],
	["key", "foo"], ["punctuation", ":"],
	["number", "3.14159"],
	["key", "bar"], ["punctuation", ":"],
	["number", "4e8"],
	["key", "baz"], ["punctuation", ":"],
	["number", "3.1E-7"],
	["key", "foo"], ["punctuation", ":"],
	["number", "0.4e+2"],
	["key", "bar"], ["punctuation", ":"],
	["number", "-0xFF"],
	["key", "baz"], ["punctuation", ":"],
	["number", "+0o123"]
]

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

Checks for numbers.