Bumped version number for bugfix release

Bumped version number for bugfix release

This release fixes the following 2 bugs:

1. A crash in the SHM API when a client is being removed from the server
during a SHM update (issue #60) - fixed by Daniel Weeks (@doctaweeks)

2. Failure to detect missing IPv6 support in FreeBSD jails - fixed by
Marcus Ball (@marcusball)

It is strongly advised that users who make use of the SHM API (e.g.
using umurmur-monitor) upgrade to this version, as bug #60 could cause
possible denial-of-service due to the server crashing.