Merge pull request #4 from num42/swift_syntax_and_workflow

upgrade swift syntax and add GitHub workflow

Update Columnifier.swift

Update Columnifier.swift

Update Package.swift

update versions and fix warnings

Update Package.swift

Merge pull request #3 from num42/release/1.0.1

Prepare Release v1.0.1: Remove Swifttlint

Merge pull request #2 from num42/ios/feature/remove-ssh-dependency

- removed ssh dependency