Merge pull request srvrco#621 from srvrco/bash4

Add tests for bash 4.0, 4.2, 5.0

Merge pull request srvrco#619 from srvrco/handle-dig-failure

Handle dig failure

Merge pull request srvrco#610 from srvrco/release_231

Release v2.31

Merge pull request srvrco#583 from srvrco/release2.30

Update version to 2.30

Merge pull request srvrco#575 from srvrco/support-space-delim-sans

Support space delimited SANS

Merge pull request srvrco#575 from srvrco/support-space-delim-sans

Support space delimited SANS

Merge pull request srvrco#565 from srvrco/revoke-error

Fixes --revoke (srvrco#558)
Adds --notify-valid (srvrco#559)

Merge pull request srvrco#562 from srvrco/release-2.27

Update revision history and version

Merge pull request srvrco#550 from srvrco/test-improvement

Fix domain case conversion for different locales

Merge pull request srvrco#545 from srvrco/remove-seq-dependency

Remove dependency on seq, ensure clean_up doesn't try to delete /tmp