Changes in version 0.1.7 * Fixed a C warning. Changes in version 0.1.6 * deal with a deprecated `<<` operator for `arma` objects in version 11.2.3. Changes in version 0.1.5 * better usage of single instruction, multiple data (SIMD) when compiling with e.g. -O3 -mtune=native. Changes in version 0.1.0 to 0.1.4 * first submission to CRAN. * bug fixes of bugs found on CRAN's checks.