Release 4.2.0.rc1
Release 4.2.0.rc1

mongodb/bson-ruby,estolfo/bson-ruby,ukblewis/bson-ruby,ukblewis/bson-ruby,estolfo/bson-ruby,ukblewis/bson-ruby,ukblewis/bson-ruby,mongodb/bson-ruby,estolfo/bson-ruby,mongodb/bson-ruby,mongodb/bson-ruby,estolfo/bson-ruby