Lots of changes:
- Fix to bSocial_Facebook_User_Stream
- Most interactions now take an optional $page_id value
- Add post_event, set_page_token, get_permissions, and get_pages methods
- get_page, page_stream methods map to get_profile, and get_stream methods but require a page_id
- post_status now takes a message_info array instead of just a text string.
- Probably something else I'm forgetting.