Release v0.1.2
Merge pull request #3 from go-board/feat/cmp [cmp] add cmp package 1. add cmp.Ordering interface 2. add PartialOrd/Ord/PartialEq/Eq interface 3. add help functions
Merge pull request #3 from go-board/feat/cmp [cmp] add cmp package 1. add cmp.Ordering interface 2. add PartialOrd/Ord/PartialEq/Eq interface 3. add help functions