** Removed the mirroring on the "Select All" option. **

Signed-off-by: Tyf0x <Tyf0x@users.noreply.github.com>
** Keyboard navigation fix: disabled elements are no longer selectable **

Signed-off-by: Tyf0x <Tyf0x@users.noreply.github.com>
Merge pull request #314 from Tyf0x/select-all_fix

** Removed the mirroring on the "Select All" option. **
Merge pull request #315 from Tyf0x/disabled_option_selection_fix

** Keyboard navigation fix: disabled elements are no longer selectable *...
nonSelectedText documentation.
Added #205 and #309 to FAQ.
allow onChange to trigger when calling `select` or `deselect` with one value