v.0.4.1

New features and improvements

• Use more recent Intel oneAPI Threads Building Blocks (TBB) library to improve the stability in parallel computing.
• Add options(proxyC.threads) to control the number of threads in parallel computing (but RCPP_PARALLEL_NUM_THREADS still has effect).

New system requirements

• The RcppParallel package is no longer required as the TBB library in the operating system (Linux and MacOS) or Rtools (Windows) is used.
• Linux and MacOS must have the TBB library to enable parallel computing before installing this package from the source.