Version 0.6 released

Version 0.6 of libcppa has just been released. This release brings several improvements to the synchronous messaging API. Please read more about features like functor-only usage and continuations in the revamped Section 7 of the manual.

Among several smaller improvements, this release also includes:

• manual skipping of messages
• Boost 1.53 support thanks to GitHub user abigagli
• a new quit_actor function to send 'EXIT' messages to actors