Morebuiltins

1. add `tk.TKit.ask_text`
2. focus_force for `tk.TKit`

1. update default format of `utils.format_error`
2. add `functools.SizedTimedRotatingFileHandler`
3. add `utils.switch_flush_print`
4. add `tk.TKit`

1. add `utils.is_running_linux`, `utils.is_running_win32`
2. add `functools.InlinePB`
3. add `date.ScheduleTimer`, `date.Crontab`

1. add `utils.xor_encode_decode`
2. add `utils.is_running`, `utils.lock_pid_file`
3. add `request.make_response`
4. add `utils.get_paste`(tk), `utils.set_clip`(win32)
5. add `utils.custom_dns`
6. update `utils.format_error` support slice index