This is a minor bugfix relative to 16.
There are still some outstanding issues that have been reported that I haven’t been able to track down, including a programming error issue that comes up mid-game to do with misformed snippets. If you have a transcript of this happening, it would help me.
Emily Short's Interactive Storytelling 
Just so you know, the problems I was having with version 13 have completely disappeared with this one – it whizzes along now, and seems a very good game, though I’m only a bit of the way into it.
I’m looking forward to the release of the actual conversation extension – it seems like an incredibly useful tool.