- Initial test commit
- Added tests
headersAttrRef performance improvement
Merge remote-tracking branch 'origin/feature/headersAttrRefersToATableCell' into feature/headersAttrRefersToATableCell

Conflicts:
	src/js/custom/headersAttrRefersToATableCell.js
headersAttrRef... test styled
Merge branch 'feature/headersAttrRefersToATableCell' into wcag2