>     BranchStore .fork(name, v0, cb(err)) should create a new branch of the given name, and set its head version to v0:   ․ BranchStore .fork(name, v0, cb(err)) should create a new branch of the given name, and set its head version to v0
>     BranchStore .head(branchName) should return the last known version of the given branch:   ․ BranchStore .head(branchName) should return the last known version of the given branch
138c140
<   135 passing (2s)
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>   137 passing (2s)