Bump version to v2.3.0

Bump version to v2.2.0

feat: Various performance improvements (#128)

* feat: Make request concurrency configurable

* version 2.1.0

Ensure repos aren't processed twice (#126)

[v2] Add org/user metrics gathering (#125)

Align docker version tag with release tag (#124)

Version 1.3.1 Release

Version 1.3.0 Release

Version 1.2.0 Release

Merge pull request #103 from hainenber/replace-deprecated-ioutil-func…

…tions

chore: replace deprecated `io/ioutil` functions with modern equivalences.