Annyeonghaseyo!
Sorry for the English.
Since there seems to be interest in the KoNLPy community for adding functionality for manipulating Hangeul I decided to put my own code up on github as an open-source project (GNU GPL3). Feel free to use it as is or cannibalize it to implement the APIs you want. The project is:
koreanlangutils - A Python library for manipulating Korean language data
It can be found at:
I hope you will take a look. It's short on documentation but the README.md should give a pretty good idea of what the library is all about.
Let me know if you have any questions.
-- John