Merge branch 'release/0.0.71' into develop
src: add instance method 'bottomLeftCorner()'
test: add instance method 'bottomLeftCorner()' testings
lint: add some files for linting pass
readme: add instance method 'bottomLeftCorner()' api
npm: 0.0.71 -> 0.0.72
Merge branch 'release/0.0.72'