This release fixed a number of long-standing issues.

Fixes:

• Fixed macOS build (#142)
• Updated msgpack (#152)
• Fixed a bug where the server could crash if the client timed out (#153)
• Fixed code coverage (moved away from coveralls.io)

Additions:

• Simplified and modularized CMake script (#94)
• Added this_session()->id() which is a unique, per-session id
• Added waffle.io badge
• Added missing client::clear_timeout function