This way you can still get the raw latex back, even if you don't
process with citeproc. Previously, cites were not visible at all
unless you specified --biblio on the command line and converted
them using citeproc, or used --natbib or --biblatex.
* The new reader is more robust, accurate, and extensible.
It is still quite incomplete, but it should be easier
now to add features.
* Text.Pandoc.Parsing: Added withRaw combinator.
* Markdown reader: do escapedChar before raw latex inline.
Otherwise we capture commands like \{.
* Fixed latex citation tests for new citeproc.
* Handle \include{} commands in latex.
This is done in pandoc.hs, not the (pure) latex reader.
But the reader exports the needed function, handleIncludes.
* Moved err and warn from pandoc.hs to Shared.
* Fixed tests - raw tex should sometimes have trailing space.
* Updated lhs-test for highlighting-kate changes.
