v0.0.14: completing IMAP 4 Rev 1 command support

This release provides the complete command support of the IMAP 4 Revision 1 standard.

• Save messages to the server with ImapClient.appendMessage().
• Store message flags using the ImapClient.store() method or use one of the mark-methods like markFlagged() or markSeen().
• Copy message(s) using ImapClient.copy().
• Copy, fetch, store or search message with UIDs using ImapClient.uidCopy(), uidStore(), etc.
• Remove messages marked with the \Deleted flag using ImapClient.expunge()
• Authenticate via OAUTH 2.0 using ImapClient.authenticateWithOAuth2() (AUTH=XOAUTH2) or authenticateWithOAuthBearer() (AUTH=OAUTHBEARER).
• You can now switch to TLS using ImapClient.startTls().
• Query the capabilities using the ImapClient.capability() call.
• Let the server do some housekeeping using the ImapClient.check() method.

Download as usual from https://pub.dev/packages/enough_mail

SMTP sending fix

A bug in the SMTP sending command resulted in mails not being sent out.

Releases are available here: https://pub.dev/packages/enough_mail/versions
How to install: https://pub.dev/packages/enough_mail#-installing-tab-