feat!: release breaking change as breaking (#634)

Add README note about typescript

BREAKING CHANGE: release breaking change (typescript) as breaking

Author: brian-smith-tcril

README.rst

@@ -35,6 +35,7 @@ Requirements
 
 This component uses ``@edx/frontend-platform`` services such as i18n, analytics, configuration, and the ``AppContext`` React component, and expects that it has been loaded into a micro-frontend that has been properly initialized via ``@edx/frontend-platform``'s ``initialize`` function. `Please visit the frontend template application to see an example. <https://github.com/openedx/frontend-template-application/blob/master/src/index.jsx>`_
 
+As of version 7.x, consuming applications must support typescript.
 
 Environment Variables
 ====================
@@ -190,4 +191,4 @@ Please do not report security issues in public. Please email [email protected]
 .. |license| image:: https://img.shields.io/npm/l/@edx/frontend-component-header.svg
    :target: @edx/frontend-component-header
 .. |semantic-release| image:: https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg
-   :target: https://github.com/semantic-release/semantic-release
+   :target: https://github.com/semantic-release/semantic-release