[0.12.0] - 2020-06-04

Added

• Added support of Direct Line App Service Extension, by @ckkashyap, in PR #183 and #274
• Added support for Retry-After header and version information to x-ms-bot-agent header, by @swagatmishra2007, in PR #247
  • Also improved testability of the package

Changed

• Lock down on version of dependencies, by @compulim, in PR #280
  • rxjs@5.5.10
    • This version is selected out of the previous commit of package-lock.json
• Bumped botframework-streaming@4.9.2, by @compulim, in PR #285