v2.10.0

Bug fixes:

• linkWithUnclearPurpose should only look at links, not <a> without href. (#245)

New rules

• A tabpanel should be related to a tab via aria-controls or aria-labelledby (src/audits/UncontrolledTabpanel.js)
• A data table must identify row and column headers (src/audits/TableHasAppropriateHeaders.js)
• A tooltip element should have an aria-describedby referring to it (src/audits/RoleTooltipRequiresDescribedBy.js).

Enhancements

• Pull DOM-related functionality out into DOMUtils.js

Bug fixes:

• Fix findTextAlternatives not always correctly ignoring hidden elements (#217).
• findTextAlternatives now honors alt attribute of input type image
• Revert #150 which was causing the extension not to work.
• AX_HTML_02 (duplicate IDs) now only audits elements that are referenced by an IDREF (#141);
• Fix #171 by being smarter about finding the composed parent node.
• Tweak in canScrollTo to handle the (common) case where the container is document.body (#243).
• linkWithUnclearPurpose should only look at links, not without href. (#245)