* Make `Scrollbar` accept a table for its options
* Add `force_status`, `{expanded,shrinked}_size` options to `Scrollbar`
* Add `Scrollbar:set_forced_status`
* Add `config.force_scrollbar_status` to force `DocView` scrollbars status
* Make `Scrollbar` accept a table for its options
* Add `force_status`, `{expanded,shrinked}_size` options to `Scrollbar`
* Add `Scrollbar:set_forced_status`
* Add `config.force_scrollbar_status` to force `DocView` scrollbars status