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Remove Library type
Add explicit module export list
Factor SourceTree into separate module
Qualified import of OSX module
Add target for building test executable
Fix compile error in debug configuration
Whitespace fix
Build tests on OSX for 32 bit X86

Closer to the simulator and ARM 32 bit.
Automatically run tests after building
Add some tests for worker thread implementation
Add GCC pragma for unused parameter warning in spsc_queue
Use std::mutex and std::atomic instead of boost classes
Add method for querying maximum queue capacity to Worker

Useful for testing.
Remove debugging code from worker thread implementation
Enable the use of multiple threads in worker implementation
Don't lock mutex when only one worker thread exists
Make id conversions to numeric/boolean types explicit

C++ rules for precendence of implicit conversion are not very intuitive.