We have made a number of architectrual changes to standard objects (adding fields, changing layouts, creating rules, etc) in a sandbox environment and want to move these to the production environment. What is the best way to do this?  Is it possible to move object by object or do we move the entire sandbox over?  When we tried to test this out using changesets, it looks like it would only allow us to move a custom object, not a standard object, so we must be missing something. Thanks in advance for your help!