Version 0 5 4 Released

<!-- .. title: Version 0.5.4 released .. slug: version-0-5-4-released .. date: 2010-03-14 18:28:15 .. tags: Releases .. category: .. link: .. description: .. type: text -->

This is a bugfix release.

• Fix memory allocation in mqtt3_fix_sub_topic() (bug #531861).
• Remove accidental limit of 100 client connections.
• Fix mosquitto_pub handling of messages with QoS>0 (bug #537061).