Simple simulation doesn't work

I'm using the latest version of the library, with node 0.10.17 . With this code, it downloads the latest trades, and then does nothing. What am I doing wrong? This is a really great idea for a library, and I'd like to help it succeed:

var Benjamin = require("benjamin");
var options = {
    client:{
        api_key:"BLAH",
        api_secret:"SEEKRIT"
    }
};
var benjamin = new Benjamin(options);

var strategy = {
    name:"Max-strategy",
    initialize:function(){
        console.log("Init!");
    },
    tick:function(Trades,currentSuggestion,callback){
        console.log("Here!");
        callback(0);
    },
    shouldExit:function(){
        return false;
    }
};

benjamin.use(strategy);

var start = Math.floor(Date.now()/1000)-31*24*60*60;
var end = Math.floor(Date.now()/1000);
benjamin.simulate({
    start: start, // UNIX-timestamps
    end: end,
    interval:15
});

Start by reproducing the supplied benjamin.simulate example with Node 0.10.17 and trace where execution stops after the trades download. Done means the cause of the missing strategy output is identified and the example either runs as expected or documents the required usage.