Merge branch 'release/0.0.29' into develop
src: added instance method 'conjugate()'
lint: added some files for linting pass
test: added instance method 'conjugate()' testings
readme: added instance method 'conjugate()' api
npm: 0.0.29 -> 0.0.30
readme: fixed a mistake
Merge branch 'release/0.0.30'