Changing the serializing process
Fixing the getSerializedSize method of a MutableRoaringBitmap
Fixing the serialization process
Fixing the serializing method
Some cleaning
Getting the buffer's memory usage
Some fixing
Omitting some unnecessary code
Fixing deserialization
Fixing MutableRoaringArray deserialization
Fixing the buffer's limit when creating a new ImmutableRoaringBitmap
Fxing a memory-mapping test
Merge pull request #10 from samytto/master

Improving in-memory usage