Log Message:
Update to 1.1:

New in 1.1

- Make get_lb_prop_lang static and not an exported symbol
- Define is_line_breakable to alias to is_breakable
- Declare get_next_char_utf* will be changed to lb_get_next_char_utf*
- Move the declarations of get_next_char_utf* from linebreak.h to
  linebreakdef.h
- Add the function documentation comments to the header files