tree 56664722f2f95b5aee3ffd57d838e894fb1de864
parent 3e6df5d4e989fafd2c581b4de597da2437273234
author Samuel Zhang <simpzan@gmail.com> 1478260974 +0800
committer Nolan Lawson <nolan.lawson@gmail.com> 1482105178 -0800

(#5832) - new feature: force update.

add a `force` option to `put` operation to allow update based on
non-leaf revison and generate a new conflict revision, instead of
reporting update conflict error.