New multi-select support for Stack- and Grid-based variants
Documented config in README, along with other improvements.
Added overlay support on tables that were missing it.
For Stack- and Grid-based tables:
- six new table variants to support multi-select
- both single- and multi-select use a simple tap to select/unselect
- does not appear to interfere with context or swipe menus
As mentioned earlier, this library will stay in 0.9.x for a few weeks to identify and address any defects or design flaws.