Rumble 1.6.0 Yucca

• the materialization of too many items now throws an error rather than just a warning, to avoid incorrect results
• a bug was fixed in the closure of inline functions. Now, the variable values in scope where the function is created are correctly taken.
• new functions: format-date, format-dateTime, format-time, current-date, current-dateTime, current-time, serialize
• parallelization of existing functions: flatten, intersect, descendant-objects, descendant-arrays, remove-keys, project, insert-before
• new input format: AVRO, with avro-file() functions
• global variables are now supported and dependency cycles are identified
• the shell is more colorful
• a local FLWOR with a return clause returning big sequences (aka underlying RDD/DF) is no longer materialized.
• support for => operator to pass the left-hand-side as the first parameter to a function (similar to OO-programming)
• support for simple map expressions (! operator) also in parallel
• conditional expression, switch expressions as well as comma expressions can now also run in parallel
• Rumble can run as an HTTP server for integration with any host language