removing virtual function
First async_logger
Added mlog::queue
Updated async_logger
Removed headers.
Fixed thread creation
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Removed mlog::queue 
Switched the async_logger to boost::lockfree::queue
Removed header
Updated to boost 1.53
Fix for travis-ci
Fix for travis-ci
Fix for travis-ci
Fix for travis-ci
Fix for travis-ci
Fix for travis-ci
Fix for travis-ci
Fix for travis-ci
no message