Version 2.1-b9 of the Sleep scripting project has been released. They write in, "Significant changes: Scalars (including closures) are now serializable. The array index operator now allows a negative value. Fixed a performance 'bug' with large hash/array data sets. Fork now inherits the debug flags of its parent. This is a continuation of the march towards a 2.1-stable. Hopefully we're almost there."
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