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2.0.0 Release Notes
===================
Channels 2.0 is a major rewrite of Channels, introducing a large amount of
changes to the fundamental design and architecture of Channels. Notably:
* Data is no longer transported over a channel layer between protocol server
and application; instead, applications run inside their protocol servers
(like with WSGI).
* To achieve this, the entire core of channels is now built around Python's
``asyncio`` framework and runs async-native down until it hits either a
Django view or a synchronous consumer.
* Python 2.7 and 3.4 are no longer supported.
More detailed information on the changes and tips on how to port your
applications can be found in our ``/one-to-two`` documentation in the 2.x
docs version.
Backwards Incompatible Changes
------------------------------
Channels 2 is regrettably not backwards-compatible at all with Channels 1
applications due to the large amount of re-architecting done to the code and
the switch from synchronous to asynchronous runtimes.
A migration guide is available in the 2.x docs version, and a lot of the basic
concepts are the same, but the basic class structure and imports have changed.
Our apologies for having to make a breaking change like this, but it was the
only way to fix some of the fundamental design issues in Channels 1. Channels 1
will continue to receive security and data-loss fixes for the foreseeable
future, but no new features will be added.
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