crashes when loading group with UTF-8 characters in name.

[PhotoCoffee]

Like the title states. Also after changing the name (probably from the history). Name was 𝒞ℴ𝓂𝓅𝓊𝓉ℯ𝓇 𝒢𝓇ℴ𝓊𝓅 .

Traceback (most recent call last):
  File "/usr/local/bin/nctelegram", line 93, in <module>
    ncTelegram.Telegram_ui(config_full)
  File "/usr/local/lib/python3.5/dist-packages/ncTelegram/__init__.py", line 91, in __init__
    self.main_loop.run()
  File "/usr/lib/python3/dist-packages/urwid/main_loop.py", line 278, in run
    self._run()
  File "/usr/lib/python3/dist-packages/urwid/main_loop.py", line 376, in _run
    self.event_loop.run()
  File "/usr/lib/python3/dist-packages/urwid/main_loop.py", line 682, in run
    self._loop()
  File "/usr/lib/python3/dist-packages/urwid/main_loop.py", line 719, in _loop
    self._watch_files[fd]()
  File "/usr/lib/python3/dist-packages/urwid/raw_display.py", line 393, in <lambda>
    event_loop, callback, self.get_available_raw_input())
  File "/usr/lib/python3/dist-packages/urwid/raw_display.py", line 493, in parse_input
    callback(processed, processed_codes)
  File "/usr/lib/python3/dist-packages/urwid/main_loop.py", line 403, in _update
    self.process_input(keys)
  File "/usr/lib/python3/dist-packages/urwid/main_loop.py", line 509, in process_input
    something_handled |= bool(self.unhandled_input(k))
  File "/usr/lib/python3/dist-packages/urwid/main_loop.py", line 555, in unhandled_input
    return self._unhandled_input(input)
  File "/usr/local/lib/python3.5/dist-packages/ncTelegram/__init__.py", line 254, in unhandle_key
    self.chan_widget.go_next_chan()
  File "/usr/local/lib/python3.5/dist-packages/ncTelegram/ui_chanwidget.py", line 144, in go_next_chan
    self.chan_change('bu', self.chans[self.current_chan_pos])
  File "/usr/local/lib/python3.5/dist-packages/ncTelegram/ui_chanwidget.py", line 177, in chan_change
    self.Telegram_ui.msg_widget.get_history()
  File "/usr/local/lib/python3.5/dist-packages/ncTelegram/ui_msgwidget.py", line 60, in get_history
    self.print_msg(msg)
  File "/usr/local/lib/python3.5/dist-packages/ncTelegram/ui_msgwidget.py", line 141, in print_msg
    msg_reply = self.Telegram_ui.sender.message_get(msg['reply_id'])
  File "/usr/local/lib/python3.5/dist-packages/pytg/sender.py", line 630, in command_alias
    return self.execute_function(command_name, *args, **kwargs)
  File "/usr/local/lib/python3.5/dist-packages/pytg/sender.py", line 320, in execute_function
    result = self._do_send(request, answer_timeout=self.default_answer_timeout, retry_connect=retry_connect)
  File "/usr/local/lib/python3.5/dist-packages/pytg/sender.py", line 507, in _do_send
    raise ConnectionError("Remote end closed")
pytg.exceptions.ConnectionError: Remote end closed