Renamed unordered list format method
Added missing method comments
Added list_utils.fix_ordered_list_numbering

It currently does nothing.
Updated unordered list pattern name
Implemented _is_ordered_list_item
Fixed ordered pattern matching any char

It should match a literal period.
Updated tab count method name
Fixed assert
Added _tab_count tests
Multiple digit lists are now recognized

Before, only single digit lists were reported as ordered list items.
Implemented _format_ordered_list
Added new/missing calls to formatters
Removed redundant test

Originally, test_dirtyToCleanToClean() was supposed to confirm
idempotency in the formatters. That’s what test_cleanToClean() does.
Added an ordered list