chore(lint): more linting

[fredbi]

• enabled a few more linters: better to configure a linter with more relaxed settings than default than to disable it altogether
• more detailed godoc
• fixed missing license mark in recently addd source file

Change type

Please select: 🆕 New feature or enhancement|🔧 Bug fix'|📃 Documentation update

Short description

Fixes

Full description

Checklist

• I have signed all my commits with my name and email (see DCO. This does not require a PGP-signed commit
• I have rebased and squashed my work, so only one commit remains
• I have added tests to cover my changes.
• I have properly enriched go doc comments in code.
• I have properly documented any breaking change.

[codecov]

Codecov Report

❌ Patch coverage is 72.72727% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 79.00%. Comparing base (c653a59) to head (aec0226).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
pointer.go	62.50%	6 Missing ⚠️

❌ Your patch status has failed because the patch coverage (72.72%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #71      +/-   ##
==========================================
+ Coverage   78.46%   79.00%   +0.53%     
==========================================
  Files           2        2              
  Lines         274      281       +7     
==========================================
+ Hits          215      222       +7     
  Misses         40       40              
  Partials       19       19              

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[fredbi]

Need to address coverage issue on edge cases on a follow-up PR