go-sisimai compatibility 7e89

[azumakuniyuki]

• 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 ['4.4.4', 0, 0, 'hosted tenant which has no mail-enabled subscriptions' in Sisimai::Rhost::Microsoft
• Code improvement and bug fix at Sisimai::Lhost::Exim
  • checking the line Content-Type: message/delivery-status
  • Remove needless condition for getting error messages
  • Rewrite code for getting an SMTP reply code and a delivery status code
• Add a new error message pattern in Sisimai::Reason::BadReputation

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 97.40260% with 2 lines in your changes missing coverage. Please review.

Project coverage is 85.67%. Comparing base (e90952b) to head (0b4f006). Report is 17 commits behind head on 5-stable.

Files with missing lines	Patch %	Lines
lib/Sisimai/Lhost/Exim.pm	90.90%	1 Missing :warning:
lib/Sisimai/SMTP/Failure.pm	97.91%	0 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## 5-stable #547 +/- ## ========================================= Coverage 85.66% 85.67% ========================================= Files 135 135 Lines 6559 6553 -6 Branches 1906 1907 +1 ========================================= - Hits 5619 5614 -5 Misses 301 301 + Partials 639 638 -1 ```

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