Use iterable from collections.abc
Use iterable from collections.abc

To supress the warning:

  rapidsms/router/api.py:63: DeprecationWarning: Using or importing the ABCs
    from 'collections' instead of from 'collections.abc' is deprecated, and
    in 3.8 it will stop working
      if not isinstance(connections, collections.Iterable)

lsgunth/rapidsms,lsgunth/rapidsms,lsgunth/rapidsms,lsgunth/rapidsms