MutableBitSetDeserializer

Adds support for deserializing Scala scala.collection.mutable.BitSets. Scala Bitsets can already be serialized using IteratorModule or DefaultScalaModule.

Do not enable this module unless you are sure that no input is accepted from untrusted sources.

Scala BitSets use memory based on the highest int value stored. So a BitSet with just one big int will use a lot more memory than a Scala BitSet with many small ints stored in it.