v0.4.0 Release

Change Log

Android

• fix #52
• Message type add SEND_CUSTOM & RECEIVE_CUSTOM
• ChatInputView add Interface： OnClickEditTextListener
  usage:

mChatInput.setOnClickEditTextListener(new OnClickEditTextListener() {
            @Override
            public void onTouchEditText() {
                // do something
            }
        });

iOS

• surport custom Message