4.0.1

Fixed

• Type casting added to several ImapProtocol return values #261
• Remove IMAP::OP_READONLY flag from imap_reopen if POP3 or NNTP protocol is selected #135 (thanks @xianzhe18)
• Several statements optimized and redundant checks removed
• Check if the Protocol supports the fetch method if extensions are present
• Detect NONEXISTENT errors while selecting or examining a folder #266
• Missing type cast added to PaginatedCollection::paginate #267 (thanks @rogerb87)
• Fix multiline header unfolding #250 (thanks @sulgie-eitea)
• Fix problem with illegal offset error #226 (thanks @szymekjanaczek)
• Typos fixed