- retrieve IMAP hierarchy separator reliably
- Support for COI functions:
- retrieve COI server settings
- enable or disable COI for a user
- read and write the chat message filtering rule on the server
- read the root mailbox along with Chats and Contacts mailboxes
- support the WebPush IMAP extension
- removeAccount() now returns bool, added option to force SSL usage when discovering accounts
- Use update enough_mail package
- Add json encoding support
- Initial version