2014-06-20    2.0.0
-------------------
   * Release v. 2.0.0

   - This release adds an additional user defined `extra_key_order (list)`
      to `RdictIO` and `RdictFO`, `RdictFO2`

   * NEW ADDED:
      - methods: to `RdictIO` and `RdictFO`, `RdictFO2`
         - yield_extra_key_value_order()
         - replace_extra_key_order()
         - appendto_extra_key_value_order()