This was dropped because we used to have postinstall scripts that
we did not want to use on npm. We don't anymore, so there's no
use in removing those scripts.
This should make it easier to manage and diff. This takes 2 things into account:
1. we have either stable or experimental versions and each are kept in monorepo.
2. we dont keep hash and update only changed packages.
This commit also removed the hash to make sure this does not happen.
