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Step1: to finish bugfixing on 1.9.1-pre and release 1.9.1
Step2: to merge 1.9.1 fixes on ‘default/master/develop’ branches and repeat the Sprint for the 1.9.2-pre
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Also: for each new releases, we should branch and create a new branch X.Y.Z so both release and bugfixing can go at their own pace.
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