+ Added support for smarty security features, see the DwooSecurityPolicy class and $dwoo->setSecurityPolicy()
+ API: Added a DwooCompiler->setLooseOpeningHandling() method that, if set to true, allows tags to 
* Fixed {elseif} bug that appeared when multiple elseif tags were used in a row
* Syntax: Improved simple math support to work within variable variables (i.e. you can do {$array[$index+1]}) and within strings as well. To prevent this enclose the variables in backticks (i.e. {"$foo/$bar"} will do the math while {"`$foo`/$bar"} won't as $foo is properly delimited)

git-svn-id: svn://dwoo.org/dwoo/trunk@4 0598d79b-80c4-4d41-97ba-ac86fbbd088b