Merge branch 'release/0.0.83' into develop
src: add instance method 'solve()'
test: fix some mistakes
test: improve the readability
test: add instance method 'solve()'
readme: add instance method 'solve()' api for FullPivLU and CFullPivLU
lint: add some files for linting pass
npm: 0.0.83 -> 0.0.84
Merge branch 'release/0.0.84'