[4.8.1] - 2020-04-22

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Changelog

Fixed

• Fixes #3075. Fix usability issues around accessibility, by @compulim in PR #3076
  • Fix timestamp should not be narrated more than once.
  • Associate the activity text with its attachments, by adding a role="region" to the activity DOM element.
• Fixes #3074. Keep props.locale when sending to the bot, by @compulim in PR #3095
• Fixes #3096. Use <ScreenReaderText> instead of aria-label for message bubbles, by @compulim in PR #3097