* feat(where): adding where_single_line option and tests
* fix(where): adding more tests
* feat(where): changing the shape of where clause when where_single_line is true
* feat: newline_for_brace should avoid adding a new line where where_single_line is true
* fix(items): where_single_line should bypass the multi-item where clauses
* fix(items): refactoring and removing redundant variables
* fix(items): where_single_line should not be functional when args are multilined
* fix(config): fixing conflict with upstream
