Hi all,

I've added a few Exhibit features:

1. Multiple hops in facet definitions. That means, for example, you can 
define a facet with an expression like this

    .author.school

should you want to filter publications by the schools of their authors, 
rather than the authors themselves.

2. ex:if (as ex:if-exists is insufficient). Now you can do this in a 
lens template:

    <span ex:if=".political-party = 'Democrat'">...</span>

Note that you should have spaces around = as my expression parser at 
this moment isn't very robust.

3. ex:select (as ex:if is still insufficient). You can do this:

    <span ex:select=".author.school">
       <span ex:case="MIT">My school</span>
       <span ex:case="Harvard">The little school down the street</span>
       <span ex:content=".author.school"></span>
    </span>

To get these features, please link against the development version in 
the Subversion repository:

    
http://simile.mit.edu/repository/exhibit/trunk/src/webapp/api/exhibit-api.js   


Please let me know if you find any bugs.

Thanks,

David

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