I haven’t had much response (or any, really) to my beta release of 0.4, so I think the best thing to do is release it and be prepared to fix a few issues, if necessary, as and when they arise. I have done quite a lot of testing and everything seems to be ok, but it’s difficult to anticipate some potential problems, especially those to do with i18n and timezones.
0.4 adds quite a few small-ish features that people have asked for, or that fix certain problems. Here’s an explanation of the various bits and bobs: