def sync!
      Execute.task_popen3(*override_a, "sync") do |i, o, e, t|
        return t.value
      end
    end
def sync!
      Execute.task_popen3(*override_a, "sync") do |i, o, e, t|
        return t.value
      end
    end
Sync the local TaskWarrior database changes to the remote databases.
 Remotes need to be configured in the .taskrc.

 @example
   # make some local changes with add!, modify!, or the like
   tw.sync!

 @return [Process::Status] the exit status of the thread
 @api public