Add support for Scala 2.13.
(a383dff20fadc08ec9306f2f1f24b2a7e0047449 @ jdbc-driver) Synchronize access to the handlers map (#93)
(f18cf9459e071d00b1c7cbb810b44a78dfc4bd2d @ jdbc-driver) JDBC transaction handlers (#90)
(d81609665798b1c962233f588d0095f49ea33890 @ reactivemongo) Upgrade ReactiveMongo to 0.16.0 (#86)