v0.28.1

Changelog

• 0cdae9e Bump golang.org/x/sync from 0.17.0 to 0.18.0
• 63da074 Merge pull request #205 from peczenyj/return-original-error-from-GetLatestVer-function
• d506bf9 Merge pull request #207 from nao1215/dependabot/go_modules/golang.org/x/sync-0.18.0
• c9f34e6 Merge pull request #210 from nao1215/nchika/add-contribuotrs
• 3e2dd6d Merge pull request #211 from nao1215/nchika/fix-use-MANPAGE-env
• dd490fa Update contributors
• 7e6871c Update goutil.go
• c98b4e1 Use MANPATH and fix linter
• 044817e must return the inner error when cant check the latest versionf of a given module