v1.1.4-beta: Merge pull request #13 from JM-A21/beta

Update NuGet dependency packages to latest version. Fixed SmtpWorkerFilter.cs, replacing MailboxFilterResult enum result with bools due to upstream changes in SmtpServer.

v1.1.3-alpha

New alpha release for testing use only. Improved logging support and fixed memory leak issues (hopefully). Added GraphConfiguration:FromAddressOverride setting to appsettings.json to allow overriding incoming mail "From" addresses when required (primarily when an application does not provide or respect an option to configure the "From" address prior to sending, as the account used to send email via Graph must have delegate access to the mailbox of the "From" address in question).