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
  • 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]

Codecov Report

Attention: Patch coverage is 95.49550% with 5 lines in your changes missing coverage. Please review.

Project coverage is 95.00%. Comparing base (cbf9ebf) to head (90485fc).
Report is 12 commits behind head on 5-stable.

Files with missing lines	Patch %	Lines
lib/sisimai/reason.rb	86.20%	4 Missing ⚠️
lib/sisimai/lhost/exim.rb	90.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##           5-stable     #311   +/-   ##
=========================================
  Coverage     94.99%   95.00%           
=========================================
  Files           135      135           
  Lines          6798     6783   -15     
=========================================
- Hits           6458     6444   -14     
+ Misses          340      339    -1     

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