old_contents: """hug/_async.py
  
  Defines all required async glue code
  
  Copyright (C) 2016  Timothy Edmund Crosley
  
  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
  documentation files (the "Software"), to deal in the Software without restriction, including without limitation
  the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
  to permit persons to whom the Software is furnished to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in all copies or
  substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
  TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
  CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  OTHER DEALINGS IN THE SOFTWARE.
  
  """
  import sys
  
  try:
      import asyncio
  
      if sys.version_info >= (3, 4, 4):
          ensure_future = asyncio.ensure_future  # pragma: no cover
      else:
          ensure_future = asyncio.async  # pragma: no cover
  
      def asyncio_call(function, *args, **kwargs):
          loop = asyncio.get_event_loop()
          if loop.is_running():
              return function(*args, **kwargs)
  
          function = ensure_future(function(*args, **kwargs), loop=loop)
          loop.run_until_complete(function)
          return function.result()
  
      coroutine = asyncio.coroutine
  
  except ImportError:  # pragma: no cover
      asyncio = None
  
      def asyncio_call(*args, **kwargs):
          raise NotImplementedError()
  
      def ensure_future(*args, **kwargs):
          raise NotImplementedError()
  
      def coroutine(function):
          return function
  
new_contents: """hug/_async.py
  
  Defines all required async glue code
  
  Copyright (C) 2016  Timothy Edmund Crosley
  
  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
  documentation files (the "Software"), to deal in the Software without restriction, including without limitation
  the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
  to permit persons to whom the Software is furnished to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in all copies or
  substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
  TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
  CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  OTHER DEALINGS IN THE SOFTWARE.
  
  """
  import sys
  
  try:
      import asyncio
  
      if sys.version_info >= (3, 4, 4):
          ensure_future = asyncio.ensure_future  # pragma: no cover
      else:
          ensure_future = asyncio.async  # pragma: no cover
  
      def asyncio_call(function, *args, **kwargs):
          try:
              loop = asyncio.get_event_loop()
          except RuntimeError: # pragma: no cover
              loop = asyncio.new_event_loop()
              asyncio.set_event_loop(loop)
          if loop.is_running():
              return function(*args, **kwargs)
  
          function = ensure_future(function(*args, **kwargs), loop=loop)
          loop.run_until_complete(function)
          return function.result()
  
      coroutine = asyncio.coroutine
  
  except ImportError:  # pragma: no cover
      asyncio = None
  
      def asyncio_call(*args, **kwargs):
          raise NotImplementedError()
  
      def ensure_future(*args, **kwargs):
          raise NotImplementedError()
  
      def coroutine(function):
          return function
  
subject: Fix async implementation to work with multiple threads