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Python 2.7.11 and 3.5.1 Support

Change effective on 07 December 2015

Heroku now supports Python 2.7.11 and 3.5.1. You can specify a version with a runtime.txt file.

Python 2.7.11 is now default for all new Python applications. Existing applications will not be automatically updated.

Heroku Git rejects pushes from shallow clones Go buildpack uses package spec from Godeps.json