Bugzilla report with a
proposed API change + an email to the dev-list
Before making a breaking
API-change there should be an opportunity to discuss the change.
An API is always some sort of
lock-in and it is good to have API reviewed/discussed. Especially if
we
make a breaking change we
should get it right.
Adding the "api" keyword to the bug would be good too. Then we could
compile a list of such changes with a bugzilla query.