v0.6.1

Fixed Boost 1.66.0 compile errors. Thank to @redboltz.

v0.6.0

• Perfomance is improved.
• Pipeline support is added.
• Some warning removed. Thank to @redboltz.
• CMake project is improved. Thank to @psalvaggio.
• Unix socket is added. Thank to @ThyMYthOS.
• psubscribe bug is fixed. Thank to @glesserd .

v0.5.2

new release

v0.5

Update amalgamated sources