* Updated documentation.
* Various font lock color scheme tweaks.
* Separate font locking of alt text in reference definitions.
* Syntax highlighting for line breaks (two trailing spaces).
This was commented out for now because the face `nobreak-space`
is not available on Emacs 21.
* Modified bold and italic regexps so that they work when bold and italic
expressions appear on the same line.
* List regexps now require a space after the asterisk, hyphen, or period.
* Implemented font locking for basic itex features such as $..$ style math
mode expressions, $$..$$ and \[..\] style display mode equations, and
equation references of the form (eq:foo) or \eqref{foo}. These features
can be enabled by setting the `markdown-enable-itex` to a non-nil value.
* Miscellaneous other font locking tweaks.
* `blockquote-region` didn't properly restrict itself to the active region.
This has been fixed, thanks to Nick Sandow for pointing this out.
* Applied Conal Elliott's patch to fix false identification of
horizontal rules.
* Modified inline link regexp so that two inline links on the
same line are highlighted correctly. Thanks to Ryan Barrett
for pointing this out.