• Added 'groupTuple' operator
• Added NXF_WORK variable to define default scratch path
• Added Gzip un-compress ability to splitter operators
• Added 'limit' parameter to splitter operators
• Added 'meta' parameter to splitter operators
• Field 'walltime' has been renamed to 'realtime' in tracing file
• Fixed issue on 'collectFile' operator when no 'name' parameter is specified
• Removed dependency on Picard library
• Improved error reporting