Chiao/dev (#3) * changed to enable -NDEBUG in mmex for -O * Updated license * Added FGMRES solver for nullspace * Set rank for backsolve * Added PIPIT * updated reference to hifir * Removed unused codes * Updated CPP source directory * Added version and updated ijv2crs * Updated C++ kernels in HIFIR4M with new HIFIR * Updated examples using new APIs. * Updated using field name for params * Fixed authors * Fixed checking before recompilation * updated .gitignore * updated pipitHifir * Added download hifir script * Updated building script to use downloaded hifir * Removed submodule * Added option to use local C++ hifir * Updated building process * Updated ignore list for user hifir source * Changed to urlwrite * Updated varaible name * Fixed integer size for Octave * Added update and refactor * Fixed bugs in apply * Fixed bugs in create * Updated building script * Updated cite bibtex in readme * Fixed bug in hifir * Added version file and build * Added user HIF * Updated control parameters * Updated README * Updated to addparam * Updated installation * Added user-provided HIF * Added changelog Co-authored-by: Xiangmin Jiao <[email protected]>