alexa simulator doesn't end sessions when shouldEndSession is set

[ericblade]

It seems that LaunchRequest always sets session.new true, and all other requests always set session.new false. This doesn't seem to be the way that real AVS works, though. I'm not real sure how possible it would be to change this, given that I haven't looked into how the tester works at all, but figure it's worth noting, and if someone does have the time and inclination to dig into it, it'd be real helpful for some people. :-)

That said, as soon as I get some time (if ever), I'm going to look into it as well as other things.