• When user calls connection.heartbeat() we now always send out the heartbeat (AMQP-CPP no longer tries to be smart about skipping heartbeats, because that could lead to timeouts if the user is a little late with its call, or when there is network congestion)
• CMakeLists.txt: add_source_directory instead of add_subdirectory
• Fixed issue when end-of-file was encountered, this fixes #266
  *handle case when tcp connection is lost during reading, that should report an error back to user-space too (fixes #266)
• Fix compiling under FreeBSD.
• Implemented custom heartbeats in Livev
• Use std::list instead of std::vector
• Fix timer that expired too early (fix #272)
• fixed libev handler: the heartbeat interval proposed by the server was not accepted