rfc(feature): Exception Groups (#79)

Co-authored-by: Abhijeet Prasad <[email protected]>

Author: mattjohnsonpint

README.md

@@ -39,4 +39,5 @@ This repository contains RFCs and DACIs. Lost?
 - [0073-usage-of-transaction-types](text/0073-usage-of-transaction-types.md): Usage of transaction types
 - [0074-source-context-via-links](text/0074-source-context-via-links.md): Source context via links
 - [0078-escalating-issues](text/0078-escalating-issues.md): Escalating Issues
+- [0079-exception-groups](text/0079-exception-groups.md): Exception Groups
 - [0080-issue-states](text/0080-issue-states.md): Issue States