Trying to use @page:last

Hi, I'm trying to do what is said in this issue ([issues/172](https://github.com/danfickle/openhtmltopdf/issues/172#issuecomment-363375156)) to create a different footer in the last page of my pdf.

However, I'm getting an error because of this line:

https://github.com/danfickle/openhtmltopdf/blob/b7951361af9fa259e4e7d2cd62a30c8dba44af3e/openhtmltopdf-core/src/main/java/com/openhtmltopdf/css/parser/CSSParser.java#L614

Apparently, @page:**last** is not a valid option. I can only use @page:**first**, @page:**left** or @page:**right**.

Is there any other way to change the footer of the last page?

(Version I am using: 0.0.1-RC13)