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dequis and auvipy Fix py3.7 DeprecationWarning importing collections.Callable (#23)
* Fix py3.7 DeprecationWarning importing collections.Callable

It was deprecated in python 3.3 and will stop working in 3.8, new name
is `collections.abc.Callable`.

The full warning is:

    DeprecationWarning: Using or importing the ABCs from 'collections'
    instead of from 'collections.abc' is deprecated, and in 3.8 it will
    stop working

* five: add Mapping and Iterable, to be used by kombu
Latest commit e395c64 Nov 16, 2018

README.rst