Location: guide/TODO.md

Note down idea for copyleft.guide that I just had.
* Document [creating an EPUB](http://tex.stackexchange.com/questions/1551/use-latex-to-produce-epub)
* Adapt the jQuery UI tooltip hack used for the overlib replacement with
tex4ht to upstream tex4ht.
* Here's a cute idea: it would be great if copyleft.guide/LABEL from the
LaTeX sources always went to that place on the HTML version on
copyleft.org/guide/ I set a few of these up by hand already, but perhaps
there's a way that tex4ht could dump an list of URL redirects automatically
when it builds the HTML.