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Our strategy is to give PLFM a master branch and also an API-stable branch. Developers changing the master branch are not responsible for immediately verifying that the changes work with clients (and may even purposely 'break' the current APIsAP(s). However, changes to this branch are not immediately available to the clients. Workers changing the API-stable branch are responsible for testing (perhaps after making corresponding changes to) the clients and making sure they work.
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