Just published shapeless-2.2.0-RC2

[Miles Sabin]

This is the second release candidate for [shapeless-2.2.0][shapeless].
These release notes provide a summary of changes since shapeless 2.1.0.
shapeless 2.2.0 should be source and binary compatible with shapeless
2.1.0, and for migration from shapeless 2.0.0 the earlier
[migration guide from shapeless 2.0.0 to 2.1.0][migration] is still
applicable and is available on the [shapeless wiki][wiki].

Since the shapeless 2.2.0-RC1 release the following changes have been
made,

* If you are using Scala 2.10.x it is no longer necessary to provide an
explicit Scala version suffix for your shapeless dependency. You must
still ensure that you are using Scala version 2.10.2 or greater, with
Scala 2.10.5 (or switching to 2.11.x) strongly recommended.

* All the major types and type classes now extend Serializable for
compatibility with libraries and systems which use Java
serialization.

* A mechanism to replace Scala's now deprecated auto-tupling has been
added via the [ProductArgs][prodargs] and SingletonProductArgs traits.

* A number of issues relating to the generation of Generic instances
for method local case classes have been fixed.

The earlier 2.2.0-RC1 release included a number of [bug fixes][fixes]
and the following new features and enhancements,

* Added support for derivation of type classes for higher-kinded types.
See in particular the new [example][functor] illustrating the
application of this to the automatic derivation of Functor type class
instances for ADTs.

* Added support for Generic representation of types with repeated
(ie. vararg) constructor arguments.

* Added a useful toString to instances of the Typeable type class.

* Added a useful toString to Sized containers.

* Improved the CSV serialization example.

* Reorganized the SBT project modules.
The "shapeless-" prefix has been dropped from all the module names
and it is now possible to drop into the Scala REPL with shapeless
on the classpath using just the "console" command.

A big "Thank You!" to everyone who has contributed to this release,

* Alexandre Archambault ([@alxarchambault](https://twitter.com/alxarchambault))
* Dale Wijnand ([@dwijnand](https://twitter.com/dwijnand))
* Jean-Remi Desjardins ([@jrdesjardins](https://twitter.com/jrdesjardins))
* Johnny Everson ([@johnny_everson](https://twitter.com/johnny_everson))
* Simon Hafner ([@reactormonk](https://twitter.com/reactormonk))
* Vladimir Matveev ([@netvlm](https://twitter.com/netvlm))

[shapeless]: https://github.com/milessabin/shapeless
[migration]: https://github.com/milessabin/shapeless/wiki/Migration-guide:-shapeless-2.0.0-to-2.1.0
[wiki]: https://github.com/milessabin/shapeless/wiki
[prodargs]: https://github.com/milessabin/shapeless/blob/master/core/src/main/scala/shapeless/hlists.scala#L124
[fixes]: https://github.com/milessabin/shapeless/issues?q=milestone%3Ashapeless-2.2.0+is%3Aclosed
[functor]: https://github.com/milessabin/shapeless/blob/master/examples/src/main/scala/shapeless/examples/functor.scala


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