v0.15.3

What's new

• Fix issue #104, where a single Pidgin client with multiple auto-join chat rooms crashes chat joins for all connected users.
• Fix a bug in the TOC server where joining a chat from a TOC client can lock the user out from rejoining the chat room in any client.

Changelog

• d977ed5 issue #104 - toc: remove chat sessions on signoff
• 1d834d5 issue #104 - fix deadlock in chat sess mgr AddSession and RemoveSession