Add live preview support

[lllama]

It would be useful if the edit method could have parameters for generating a live preview of edited text.

[svick]

Live preview uses index.php, and I'm not going to use that, this library is for accessing the MediaWiki API, nothing else. There is a similar module in the API: parse. Does that do what you want?

That module is not currently supported by this library, but I could try looking into that.

[lllama]

the parse option does seem to do most of what I want: I'd like to have something approximating a split view with wiki text on one side and an approximate rendering on the other, so this seems to get me most of the way there.