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Moving to 2.11 as the minimum requirement would allow us to benefit from faster Map implementations like LongMap and AnyRefMap, improved compiler warnings for potential bugs as well as faster compilation performance, faster compilation and the ability to use libraries that are only available for Scala 2.11 and above (an example is scala-logging, which improves upon our Logging
trait by not creating closures or affecting stacktraces/log line information). See the announcement for the full list of improvements.
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