some destructive changes.

change fail of ActionT behaviour.
  Pass next action -> return 500 error immediately

update API documentation.
optionalize API documentation.
update api documentation.
collapse API documentation.
collapse API document.
version bump up.
Merge branch 'develop'

change fail of ActionT behaviour.
  Pass next action -> return 500 error immediately

update API documentation.
  no generate option.
  collapse route.