Link PR numbers in changelog entries? #178
Description
It would be nice if changelog entries somehow linked back to the corresponding typeshed PRs. Currently, if a user wants more information about a changelog entry, they need to manually copy the PR number and search for it on the typeshed repo.
One idea would be to search for the pattern (#NNNNN) in new changelog entries and replace it with something like (python/typeshed#NNNNN) or ([#NNNNN](https://github.com/python/typeshed/pull/NNNNN)).