See here for more info:

http://blog.bloidonia.com/post/79285969149/groovy-stream-updates-and-java-integration

Headed towards 100% test coverage
Added asSynchronized call to create a new ReentrantLock managed Stream (all streams created from this one share the same lock)

In brief:

• Removed the using block, it added complexity unnecessarily
• Added a skip method
• Added zip to join Streams
• Added concat to append Streams
• Added lots of method variants that take a 2 param Closure and pass the index as the second param tapWithIndex, filterWithIndex, mapWithIndex, etc...
• Started work on new asciidoc/jbake backed documentation

http://timyates.github.io/groovy-stream/releases.html

In brief:

• Rewritten to allow multiple map and filter calls in specified order
• Added flatMap step
• Added collate call