v0.1.0

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]>