Fumi hadwriting communication system.
- Formaly define the FMTP (Fumi message transfer protocol).
- More rich line style setting
- User manual
- Improve perfomance
- Prepare login page.
- Show login info to the user.
- Check memory leak.
- Set background color.
- Handle each user's different canvas/window size. Clients to report the canvas size on the window size change.
- Use JSON for message encoding.
- Change the line color user by user.