Multithreaded cross-platform archiver bzip.

usage: bzip -e inFile outFile threadsQuantity [blockSize]
       bzip -d inFile outFile threadsQuantity

positional arguments:
  -e                   compress file
  -d                   decompress file
  inFile               input file
  outFile              output file
  threadsQuantity      number of worker threads. If 0 the program will try
                       to determine number of logical processors.

optional positional arguments:
  blockSize            int, >0, default 50000