1. Add process of prepare write request packets
2. Add process of execute write request packets
3. Add process of reliable write request packets
4. Fix bug of processing read blob request packets
5. Fix bug of processing write request packets
6. Optimize error check and process in stack
1. move the app demo code to example
2. move the header files to correct path
3. move profile to profiles directory and seperate esp&std
4. some other codes
5. needs continue to cleanup the code
