BSON Decimal128 Support

[ddxv]

Does logstash-output-mongodb support Decimal128? I have seen the to_bson function, but was unsure if it matches the Mongo Bson Decimal128 Specs:
https://github.com/mongodb/specifications/blob/master/source/bson-decimal128/decimal128.rst

Decimal128 is a new type in Mongo 3.4 for monetary values.

[colinsurprenant]

The lib version currently in use is quite old (v2.0.6) and should be updated.