gallery field - images can now be reordered by dragging and dropping
gallery field - images can now have multiple sub-fields, e.g. title, description, etc.
Additions to help files based on user questions
Added group file 'remove_empty' option - if set will remove any groups where all sub_fields are 'empty'
textarea, rows default changed to 3 - was 20
Bug fix for upgrade - will no longer fail if field type not valid
Bug fix for multiple galleries on one page
Bug fix removing 1st image when max_files=1 - can now add another one