Kryo 4.0 with Akka support on 2.12

Identical to 0.9.0 except it also publishes chill-akka.

Kryo 3.0 branch with scala 2.12

This publishes chill, without algebird and scrooge modules, for 2.12.

Kryo 2.21 with scala 2.12

This publishes scala 0.7.x branch (which is for Kryo 2.21), with scala 2.12. We don't yet publish the scrooge and algebird targets.

Now with Kryo 4.0.0 and Scala 2.12

The 0.9.0 branch uses Kryo 4.0. It is now released (for all projects but scrooge and algebird).

No other significant changes from 0.8.1.

With Java Unmodifiable Collections

This is a minor release compatible with 0.8.0 which includes:

• Fix ArraysAsList to work with primitives #255
• Add support for Unmodifiable java collections #260

Thank you @chermenin for these contributions!

Upgrade to kryo 3.x

• Kryo 3.0.3 upgrade: #245

More caching

We now do some more caching where possible in hadoop configs:

• If the inner Instantiator is cached we should just cache the kryo and…: #243

Classloader fixes

Should enable chill to be used with apache Flink (and other places where custom classloaders are used).

• Update the build: #248
• Use currentThread classloader: #247

Minor fix for classpath handling

• Setting the class loader by default in the ScalaKryoInstantiator: #242

Injection's to lift T into an Externalizer of T

• Add testing support for Java 6, 7 and 8.
• Adds two Injection's to lift T into an Externalizer of T.
• Protobuf module is Java only.