Consolidate Changes file for 1.2 release
Consolidate Changes file for 1.2 release

dagolden/mongo-perl-driver,xdg/mongo-perl-driver,dagolden/mongo-perl-driver,mongodb/mongo-perl-driver,mongodb/mongo-perl-driver,dagolden/mongo-perl-driver,xdg/mongo-perl-driver,dagolden/mongo-perl-driver,xdg/mongo-perl-driver,mongodb/mongo-perl-driver