[twgit] Init feature 'feature/colspan'.
Add Slot object
Merge feature/split-unit-test
Add unit test with numeric value
Adding colspan and finally do not exposed Slot object
Merge branch 'feature/bc-go-function' into feature/colspan
Merge branch 'feature/bc-go-function' into feature/colspan
add colspan and test
Merge branch 'feature/colspan' into release/1.1.0