* Table: Fix error in calculate `totalFlexWidth`

* Table: Fix error in caculate `scrollX`

* Table: Watch `max-height` change

* Table: Change `toggleRowExpanded`

* Table: Support `obj[key]`

* Table: Update docs for `toggleRowExpanded`

* Table: Add style and class control for every row and cell

* Table: Add `migrating` mixin for `expand`

* Table: Update test spec

* Table: Add `index` in `table-column` for custom index