dbus based sync and async api both works.
- added error handler for dbus client in emacs lisp.
- use lexical-binding for all files
- added M-x zero-reload-all this will byte compile and reload file files.

easier to read and eaiser to write.

make partial commit work with zero-pinyin.el
added a few "virtual functions" in zero-framework.el
removed SPC key in keymap, just use self-insert-command remap.

add auto commit first candidate or preedit str on punctuation insert.
add default binding C-. for zero-cycle-punctuation-level

let zero-table base on it.

basic things work.
pagination not added yet.

this is largely working, only waiting for integration with zero-panel.