Merge branch 'release/0.0.41' into develop
src: improve readability
test: fix a mistake in 'conjugate()' testing
src: add instance method 'dot()'
lint: add some file for linting pass
test: fix a mistake
test: add instance method 'dot()' testings
readme: add instance method 'dot()' api
npm: 0.0.41 -> 0.0.42
Merge branch 'release/0.0.42'