v4.15.7

Subresource Integrity

The CDN URL will be online in about a day after we completed publish to NPM.

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Changelog

Added

• Added function to emit status change telemetry event for activities, by @Erli-ms, in PR #4631
• Added ability for developers to customize Web Chat by extending the default UI without having to re-implement existing components, by @dawolff-ms, in PR #4539

Fixed

• Fixes #4558. In high contrast mode, "Retry" link button should use link color as defined by CSS System Colors, by @beyackle2 in PR #4537
• Fixes #4566. For YouTube and Vimeo <iframe>, add sandbox="allow-same-origin allow-scripts", by @compulim in PR #4567
• Fixes #4561. Header title of keyboard help dialog should be the aria-labelledby of the dialog and close button should be the first element of the header, by @compulim in PR #4609
• Fixes #4559. Keyboard help screen should be scrollable and its close button should appear correctly in light-themed high contrast mode, by @compulim in PR #4619
• Fixes #4623. Screen reader should read error when failed to send an empty message or offline, by @compulim in PR #4637

Changed

• Updated test harness to use Selenium Hub 4.6.0 and Chrome 107, by @compulim in PR #4540