Yuxin Wu 68b3f2e543 fix printing		9 lat temu
..
README.md	e5cdf99d19 add libchat	10 lat temu
__init__.py	24b1ad56e8 msg to libchat seems to work	10 lat temu
create_db.py	d556050327 add libchat db	10 lat temu
libchat.py	68b3f2e543 fix printing	9 lat temu

A Universal Chat History Management

Fields

Table Message:

source(enum): can be 0:wechat, ...
time(time)
sender: id of the sender. id follows the name convention of source
chatroom: id of the chatroom (can be a private chat with a sender, or a group chat)
text: text content. emojis are encoded according to the source
image: binary of the image.
sound: binary of an audio
extra_data: other possible data specific to the source.

Table Wechat:

avatars
nicknames
emojis