Imap-tools

* Improved MailMessage.text, MailMessage.html on case: no text/html and with text/html attachment

* MailMessage.attachments - fixed miss some attachments

* Fixed bug at BaseMailBox.copy - folder name was not encoded

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* MailMessage.uid - fixed bug - UID cannot be parsed if stored with empty flags list
* MailMessage.uid - used one regexp instead two
* MailBox, MailBoxUnencrypted - add timeout argument (supports since python 3.9)
* Added query.UidRange, for search by uid range, UID *:123
* Deprecated query.Q was removed

* BaseMailBox.fetch - fixed wrong responses for combinations of: slice, bulk, reverse

* BaseMailBox._fetch_in_bulk - add python versions compatibility - used return instead raise StopIteration