42
3.14159
-5.7

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

[
	["number", "42"],
	["number", "3.14159"],
	["operator", "-"], ["number", "5.7"]
]

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

Checks for integers and floats. Negative numbers are handled differently than in Jexl for simplicity: In Jexl, the minus sign in "-1" is parsed as an operator in "1-1" and as part of the number literal in ("-1").
