Partials Underscore Compile

Made a small modification to the underscore support render method to allow the template partials to get compiled allowing data to get passed to those as well. 

var user = {username: 'Beetlejuice'};
<%= partials.xanadu(user) %>

lib/consolidate.js

@@ -901,6 +901,9 @@ exports.underscore.render = function(str, options, fn) {
   return promisify(fn, function(fn) {
     var engine = requires.underscore || (requires.underscore = require('underscore'));
     try {
+      for (var partial in options.partials) {
+        options.partials[partial] = engine.template(options.partials[partial]);
+      }
       var tmpl = cache(options) || cache(options, engine.template(str, null, options));
       fn(null, tmpl(options).replace(/\n$/, ''));
     } catch (err) {