Update zh-tw version docs for paper size index table

Add the Portuguese version docs for the version 1.x.x release note

Update supported formula functions list for zh-hans version docs

Use the same color for `diagonalDown` and `diagonalUp` type border

Docs for the function `SetCellFloat`

- Fix incorrect function signature for the `GetRowVisible`

Bump version 2.6.1

Bump version 2.6.0

Bump version 2.5.0