Tado component doesn't display climate panel

[filcole]

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Home Assistant release (hass --version): 0.49

Python release (python3 --version): Python 2.7.9

Component/platform: tado

Description of problem: Climate section of tado does not start, error

Expected:
Climate panel should appear within homeassistant web interface - it doesn't

Problem-relevant configuration.yaml entries and steps to reproduce:

tado:
  username: !secret tado_username
  password: !secret tado_password

1. To reproduce start hass
2. Notice that climate panel is missing from the web interface

Traceback (if applicable):

2017-07-22 23:38:48 ERROR (MainThread) [homeassistant.core] Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/usr/lib/python3.4/asyncio/tasks.py", line 233, in _step
    result = coro.throw(exc)
  File "/srv/homeassistant/lib/python3.4/site-packages/homeassistant/helpers/entity_component.py", line 381, in async_process_entity
    new_entity, self, update_before_add=update_before_add
  File "/srv/homeassistant/lib/python3.4/site-packages/homeassistant/helpers/entity_component.py", line 212, in async_add_entity
    yield from self.hass.async_add_job(entity.update)
  File "/usr/lib/python3.4/asyncio/futures.py", line 388, in __iter__
    yield self  # This tells Task to wait for completion.
  File "/usr/lib/python3.4/asyncio/tasks.py", line 286, in _wakeup
    value = future.result()
  File "/usr/lib/python3.4/asyncio/futures.py", line 277, in result
    raise self._exception
  File "/usr/lib/python3.4/concurrent/futures/thread.py", line 54, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/srv/homeassistant/lib/python3.4/site-packages/homeassistant/components/climate/tado.py", line 291, in update
    cooling = overlay_data['setting']['mode'] == 'COOL'
KeyError: 'mode'

Additional info:
Using the custom component version of the Tado component (here https://github.com/wmalgadey/tado_component) works OK. I think the problem is solved in this repo by the following commit wmalgadey/tado_component@adfb608. So getting the fixes into the mainline homeassistant source would be good.

Here is the JSON returned by the tado webservice that gives the problem formet

{  
   'preparation':None,
   'geolocationOverrideDisableTime':None,
   'activityDataPoints':{  
      'heatingPower':{  
         'percentage':0.0,
         'type':'PERCENTAGE',
         'timestamp':'2017-07-22T21:37:46.010Z'
      }
   },
   'setting':{  
      'type':'HEATING',
      'power':'ON',
      'temperature':{  
         'fahrenheit':66.2,
         'celsius':19.0
      }
   },
   'overlay':{  
      'termination':{  
         'type':'TADO_MODE',
         'projectedExpiry':'2017-07-22T23:00:00Z'
      },
      'type':'MANUAL',
      'setting':{  
         'type':'HEATING',
         'power':'ON',
         'temperature':{  
            'fahrenheit':66.2,
            'celsius':19.0
         }
      }
   },
   'link':{  
      'state':'ONLINE'
   },
   'geolocationOverride':False,
   'tadoMode':'HOME',
   'sensorDataPoints':{  
      'insideTemperature':{  
         'fahrenheit':68.72,
         'celsius':20.4,
         'precision':{  
            'fahrenheit':0.1,
            'celsius':0.1
         },
         'timestamp':'2017-07-22T21:37:42.200Z',
         'type':'TEMPERATURE'
      },
      'humidity':{  
         'percentage':61.3,
         'type':'PERCENTAGE',
         'timestamp':'2017-07-22T21:37:42.200Z'
      }
   },
   'overlayType':'MANUAL',
   'openWindow':None
}