Function: english_number

--Usage--
> english_number(number)
> english_number_a(number)
> english_number_multiple(number)
> english_number_ordinal(number)

Convert a number to English.
These four functions all behave slightly differently:
! Function			function(1)	function(2)	function(3)
| @english_number@		@"one"@		@"two"@		@"three"@
| @english_number_a@		@"a"@		@"two"@		@"three"@
| @english_number_multiple@	@""@		@"two"@		@"three"@
| @english_number_ordinal@	@"first"@	@"second"@	@"third"@

If the input is a keyword parameter value, it leaves a hint tag for [[fun:process_english_hints]], to indicate whether the following word should be plural or singular.

--Parameters--
! Parameter	Type			Description
| @input@	[[type:int]]		Number to convert

--Examples--
> english_number(1) == "one"