i've looked in there and ther eis one that stands out posted by @tomic. However, there was no mention of a recent version posted (one with all of the fixes that people mentioned).
Yes, there is in that topic (see the first post by @tomic).
@tomic has updated the zip-file of the mod whenever he has added a bugfix (which he also mentions in his posts in that topic). Even though that topics spans several pages, you should take the time to read it if you plan to add the PM mod, especially the posts made by @tomic.
That is the typical way that any author for a mod do. Not every author uses a point-release system for their mod (although I think that @tomic will start to do so with the PM mod).
Yes, I will in the future. But everything I have done has every bug fix in the current zip. Some members have posted optional code that I may not have included like avatars for PMs etc but if there is a bug with the basic PM code you can be sure I have fixed it. There has been a nagging issue with email notification but it's nothing that breaks PMs.