enif_make_copy on arguments unnecessary.
Fixed memory error (double free/memory leak(?)/general fuckery)
Fixed memory leak.
No overflow!
Added timeout for receives... just in case.

Should be considered a workaround, _best case_
Cleanup.
Move code out of .h files.
Fixed compiler warning.
Define QUEUE_H to prevent include duplication.
Added a fresh benchmark form my macmini.

Clearly illustrates performance improvements against non-threaded
version. Latency is much lower and more reliable.
Updated readme with new benchmark.