v0.2.15

Added

• Buttons can now have an html property that allows HTML to be used in place of the text property

Fixed

• Change border widths on global header items from 0.5px to 1px to help with sub-pixel rendering
• Missing background colour added for focused buttons with tna-button--solid-hover
• Logo link in header and global header components updated to address image link purpose WCAG failure
• Added aria-label to image caption on hero components
• Added title attributes to social links in footer components
• Fix details expanded state not announced on iOS (issue #5089 on govuk-frontend)
• Fixed file list accessible link names to include file size and type
• Accessibility and usability improvements made to the gallery component with regards to HTML and JavaScript