Breaking changes:

• FiberSocketChannel and FiberServerSocketChannel are created passing a ChannelGroup rather than an AsynchronousChannelGroup; this makes them independent from the async channels API
• quasar-core is now a provided dependency for quasar-actors and quasar-galaxy rather than a compile one

New features:

• Initial Kotlin support (quasar-kotlin module)
• StrandFactory API
• Additional transforming channels for take, reduce, split operations
• ReceivePortGroup now supports additional mix-style operations
• Pipeline channel transfer utility
• Additional FiberSocketChannel.connect() with timeout
• New Java8 lambdas API for ports
• New FiniteStateMachine behavior
• getChildren in supervisor actors

Improvements:

• Faster fiber stack layout and improved fiber stack management performance
• Improved buffered channels performance
• ProxyServer performance improvement
• Migration from glib to byte-buddy
• Dependencies upgrade

Closed issues:

• #73
• #74
• #76
• #78
• #79
• #81
• #82
• #87
• #90
• Fix possible SupervisorActor NPE
• Duplicate files in quasar-core-jdk8.jar
• Possible instrumentation problem with conditionally initialized arrays

This is a bug-fix release. Fixed bugs include:

• #65
• #66
• #67
• #68

In addition, quasar-core now embeds shadowed ASM artifacts rather than externally depending on ASM.

Closed Issues

• #54
• #55
• #61
• #62
• #63
• NPE in QuasarURLClassLoader/QuasarURLClassLoaderHelper

New Features:

• Automatic suspendable method detection
• Fiber serialization
• Actor migration
• Dataflow variables

Changes and Improvements

• Fiber.join and Fiber.get are now suspendable rather than thread-blocking. This should improve join performance.
• co.paralleluniverse.strands.channels.DelayVal is now co.paralleluniverse.strands.dataflow.Val
• FiberAsync has been simplified
• Much improved fiber-blocking NIO performance

Quasar 0.5.0 Release Notes

• Support for JDK 8
• Propagate an exception through a channel with SendPort.close(Throwable).
• Additional channel transformations in Channels.
• Better reporting of uninstrumented methods with -DverifyInstrumentation=true
• Various bug fixes

Quasar 0.4.0

What's New

• Hot Code Swapping
• Channel Transformations (Reactive Extensions)
• Custom Fiber Schedulers (run fibers on any thread, not just in a ForkJoinPool)

Quasar 0.3.0 Release Notes

quasar-core

• Bug-fixes, performance improvements
• Additional concurrency constructs
• Minor API improvements

qusar-actors

• Better isolation with ActorRef
• co.paralleluniverse.data.record for safe, fast and isolated shared data elements

Quasar 0.2.0

New Features

• Behaviors (GenServer, GenEvent)
• Supervisors
• Transfer channels and channel selectors
• Fiber-blocking IO
• Initial implementation of distributed actors (using Galaxy)