This is a small bugfix release that mainly fixes two critical regressions:
- FreeListRef!T, which is used heavily in the HTTP server code, stored its reference count in an unallocated memory region, leading to possible memory leaks or memory corruption - A TCP connection with a non-empty write buffer that got closed by the remote peer and locally at the same time could result in the calling task to starve (i.e. it got never resumed after yielding execution). In particular, this could happen when accessing HTTPS servers with the HTTP client in conjunction with "Connection: close". http://vibed.org/blog/posts/vibe-release-0.7.28
