* master: Added ruby-debug Fix middleware test on Ruby 1.9 Fix issue where belongs_to and one associations don't get reset if the value is nil Clone default values so they can't be modified cosmetics Fixed an issue using the association_name= method to assign a new object updated existing pointers to the proxy, rather than generating a new one Modified accessor method for one and belongs_to associations to return nil rather than a proxy object if the association does not exist Added additional method calls for build_<name>, create_<name>, and create<name>! since calling .build(), .create(), and .create!() would raise when the association is nil. Discussion from http://groups.google.com/group/mongomapper/browse_thread/thread/e311dd04b0af576f Conflicts: Gemfile Gemfile.lock lib/mongo_mapper/plugins/callbacks.rb
…Binary type to use BSON::Binary instead of BSON::ByteBuffer.