   The following transitions  are pre-registered:
   
   - `cross-fade`
-  - `move-top`
-  - `move-bottom`
+  - `move-up`
+  - `move-down`
   - `move-left`
   - `move-right`
   - `none`

  
  u = up.util
  
  defaultOptions =
    duration: 300
    delay: 0
    easing: 'ease'

  animate: animate
  transition: transition
  animation: animation
  defaults: defaults
  none: none

)()
