fail2slack v0.4.0

• Add pylint 3.10 support (fstring, replace socket with platform)
• Update dependencies
• Add v3.10, remove v3.6
• Update README, code of conduct

fail2slack v0.3.1

• Python 3.9 support
• Code style updates (pylint)
• Update dependencies
• Migrate from Travis-CI to GitHub Actions

fail2slack v0.2.2

Add housekeeping, updates for new branch

fail2slack v0.2.1

Refactor get_jails_status for better code coverage, add identifier support to update message.

fail2slack.py v0.1

Initial package release.