Added a way to get at a single parts struct mailmime_single_fields
Merge branch 'master' of github.com:mronge/MailCore
More error handling when fetching message body
Change to CTCoreAddress description output
No longer always download RFC822.Size as it is slow on some servers
Fixed: Cannot set the folder's path.
Merge pull request #77 from pitiphong-p/fixed-folder-setpath-bug

Fixed: Cannot set the folder's path.