Upgrade assembly plugin to latest version (0.14.4)

Trying to produce a shaded jar throws an exception with the current version of assembly plugin.

[info] Including: classutil_2.11-1.0.12.jar
[info] Including: akka-slf4j_2.11-2.4.17.jar
[info] Including: asm-5.1.jar
[info] Including: scalaz-core_2.11-7.2.7.jar
[info] Including: commons-logging-1.1.3.jar
[info] Including: config-1.3.0.jar
java.util.NoSuchElementException: None.get
at scala.None$.get(Option.scala:313)
at scala.None$.get(Option.scala:311)
at sbtassembly.Assembly$$anonfun$24$$anonfun$25.apply(Assembly.scala:205)
at sbtassembly.Assembly$$anonfun$24$$anonfun$25.apply(Assembly.scala:205)
at scala.collection.TraversableLike$$anonfun$filter$1.apply(TraversableLike.scala:264)
at scala.collection.immutable.List.foreach(List.scala:318)
at scala.collection.TraversableLike$class.filter(TraversableLike.scala:263)
at scala.collection.AbstractTraversable.filter(Traversable.scala:105)
at sbtassembly.Assembly$$anonfun$24.apply(Assembly.scala:205)
at sbtassembly.Assembly$$anonfun$24.apply(Assembly.scala:202)
at scala.collection.parallel.AugmentedIterableIterator$class.map2combiner(RemainsIterator.scala:120)
at scala.collection.parallel.immutable.ParVector$ParVectorIterator.map2combiner(ParVector.scala:67)
at scala.collection.parallel.ParIterableLike$Map.leaf(ParIterableLike.scala:1057)
at scala.collection.parallel.Task$$anonfun$tryLeaf$1.apply$mcV$sp(Tasks.scala:54)
at scala.collection.parallel.Task$$anonfun$tryLeaf$1.apply(Tasks.scala:53)
at scala.collection.parallel.Task$$anonfun$tryLeaf$1.apply(Tasks.scala:53)
at scala.collection.parallel.Task$class.tryLeaf(Tasks.scala:56)
at scala.collection.parallel.ParIterableLike$Map.tryLeaf(ParIterableLike.scala:1054)
at scala.collection.parallel.AdaptiveWorkStealingTasks$WrappedTask$class.internal(Tasks.scala:172)
at scala.collection.parallel.AdaptiveWorkStealingForkJoinTasks$WrappedTask.internal(Tasks.scala:514)
at scala.collection.parallel.AdaptiveWorkStealingTasks$WrappedTask$class.compute(Tasks.scala:162)
at scala.collection.parallel.AdaptiveWorkStealingForkJoinTasks$WrappedTask.compute(Tasks.scala:514)
at scala.concurrent.forkjoin.RecursiveAction.exec(RecursiveAction.java:160)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinTask.doJoin(ForkJoinTask.java:341)
at scala.concurrent.forkjoin.ForkJoinTask.join(ForkJoinTask.java:673)
at scala.collection.parallel.ForkJoinTasks$WrappedTask$class.sync(Tasks.scala:444)
at scala.collection.parallel.AdaptiveWorkStealingForkJoinTasks$WrappedTask.sync(Tasks.scala:514)
at scala.collection.parallel.ForkJoinTasks$class.executeAndWaitResult(Tasks.scala:492)
at scala.collection.parallel.ForkJoinTaskSupport.executeAndWaitResult(TaskSupport.scala:64)
at scala.collection.parallel.ParIterableLike$ResultMapping.leaf(ParIterableLike.scala:961)
at scala.collection.parallel.Task$$anonfun$tryLeaf$1.apply$mcV$sp(Tasks.scala:54)
at scala.collection.parallel.Task$$anonfun$tryLeaf$1.apply(Tasks.scala:53)
at scala.collection.parallel.Task$$anonfun$tryLeaf$1.apply(Tasks.scala:53)
at scala.collection.parallel.Task$class.tryLeaf(Tasks.scala:56)
at scala.collection.parallel.ParIterableLike$ResultMapping.tryLeaf(ParIterableLike.scala:956)
at scala.collection.parallel.AdaptiveWorkStealingTasks$WrappedTask$class.compute(Tasks.scala:165)
at scala.collection.parallel.AdaptiveWorkStealingForkJoinTasks$WrappedTask.compute(Tasks.scala:514)
at scala.concurrent.forkjoin.RecursiveAction.exec(RecursiveAction.java:160)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
[error] (root/*:assembly::assembledMappings) java.util.NoSuchElementException: None.get
[error] Total time: 56 s, completed Mar 16, 2017 10:36:09 AM
make: *** [target/scala-2.11/toree-assembly-0.2.0.dev1-incubating-SNAPSHOT.jar] Error 1