Revert "updated changlog to 0.9.7-RC1"

This reverts commit ddf9d6e032431f59595727f7d860965e1f61c95f.
Revert "Revert "updated changlog to 0.9.7-RC1""

This reverts commit cd8e4eebb828df636e17f1f20392cfb943ad7400.