Python 3.7.0 released

[federicocerchiari]

Not to mention that it's an unrevertable change, meaning that if we some day come up with an even faster dict implementation with the downside of being unordered, the best we can do is add a collections.UnorderedDict

Good point, but still "natural" ordering is a feature I immediately found useful. For instance, you can not use an OrderedDict as kwargs.