v5.1.0p4

• Keep compatibility with the Go language version of Sisimai #547 #558
  • THERE ARE SOME BREAKING CHANGES AT INTERNAL APIs
  • Sisimai::SMTP::Error has been renamed to Sisimai::SMTP::Failure and the following methods
    implemented:
    • is_temporary()
    • is_hardbounce()
    • is_softbounce()
    • soft_or_hard() has been removed
  • Changes in Sisimai::Rhost
    • get() method has been renamed to find()
    • Fix bug in code to check the domain part of an email address as a remote hostname
    • Add a new error message pattern: hosted tenant which has no mail-enabled subscriptions'
      in Sisimai::Rhost::Microsoft
  • Implement a new bounce reason Sisimai::Reason::Suppressed
  • Remove hardbounce accessor from Sisimai::Lhost #555
  • Implement Sisimai::RFC3464::ThirdParty
  • Remove the following MTA modules from Sisimai::Lhost #557
    • Sisimai::RFC3464 can decode a bounce mail returned from services/MTAs below #551
      • Amavis
      • AmazonWorkMail
      • Aol
      • Barracuda
      • Bigfoot
      • Facebook
      • McAfee
      • MessageLabs
      • Outlook
      • PowerMTA
        • Some codes for checking heaaders have been moved to Sisimai::RFC3464::ThirdParty
      • ReceivingSES
      • SendGrid
      • SurfControl
      • X5
      • Yandex
    • Sisimai::Lhost::Exim can decode a bounce mail returned from services/MTAs below
      • MailRu
      • MXLogic
    • Sisimai::Lhost::qmail can decode a bounce mail returned from services/MTAs below
      • X4
      • Yahoo
    • Sisimai::Lhost::Exchange2007 can decode a bounce mail returned from Office365
  • Sisimai::Lhost::GSuite has been renamed to Sisimai::Lhost::GoogleWorkspace
  • Sisimai::Lhost::AmazonSES decodes only JSON formatted bounce mail notified from Amazon SNS
    • The bounce mail from Amazon SES which have no JSON string is decoded by Sisimai::RFC3464
  • Each error code table of the following MTA modules (removed at issue #557) have been moved to
    Sisimai::Rhost::* #559
    • Aol
    • Facebook
    • GSuite
    • MessageLabs
    • Outlook
  • Sisimai::MDA has been renamed to Sisimai::LDA
  • Sisimai::RFC1123->is_validhostname() has been renamed to is_internethost()
  • Implement Sisimai::RFC1123->find()
  • Sisimai::RFC1894->field() detect a comment string (returns an array which have 5 elements)
• Code improvement and bug fix at Sisimai::Lhost::Exim
  • Remove needless condition for getting error messages
  • Rewrite code for getting an SMTP reply code and a delivery status code
• Warn if Sisimai::Message->load was called #537 #538
• Remove unused method Sisimai::Order->default #539
• Fix bug in Sisimai::Message->tidy() method #540
• Code improvement in Sisimai::RFC5322 and Sisimai::ARF
• Fix the minimum and the maximum SMTP Reply code: 221 and 557 in Sisimai::SMTP::Reply
• The first argument need not to be a reference at Sisimai::SMTP::Transcript->rise()
• Fix typo in Sisimai::RFC1894 (X-Actual-Recipient)
• Fix bug in Sisimai::Message->tidy(): ; is missing when the value of Diagnostic-Code field
  has multiple lines, And large scale code improvements.
• Fix bug in Sisimai::Reason::VirusDetected->true(); fix HELO with EHLO
• Add a new error message pattern in the followings:
  • Sisimai::Reason::BadReputation
  • Sisimai::Reason::Blocked
  • Sisimai::Reason::Filtered
  • Sisimai::Reason::MailboxFull
  • Sisimai::Reason::MesgTooBig
  • Sisimai::Reason::SpamDetected
  • Sisimai::Reason::SystemError
• Remove regular expressions from error message patterns at the following classes: #543
  • Sisimai::Reason::Blocked
  • Sisimai::Reason::MailerError
  • Sisimai::Reason::SpamDetected
• Fix typo in Sisimai::Rhost::YahooInc Thanks to @bohwaz #546
• Bug fix: Unstable matching for getting an Sisimai::Rhost::* module name when the bounce mail
  sent from Microsoft to Aol (Random key sort order of the Hash)
• Add sv-SE in Sisimai::Lhost::Exchange2007