v4.0.0

Breaking Changes

• Minimum supported PHP version is now PHP 7.2.

CI and Maintenance

• Removed Travis CI and Coveralls configuration/artifacts.
• Added GitHub Actions CI workflow (tests.yml) running on PHP 7.2, 7.4, 8.0, and 8.4.
• Added built-in SSH integration environment setup in CI for key + password auth tests.

Features and Fixes

• Merged PR #13: added withPrivateKeyString() support for in-memory private keys.
• Added runCommands() to support multi-command execution in a single shell context (resolves #9).
• Added secure fingerprint algorithms: SHA-256 and SHA-512 (resolves #7).
• Added recursive directory support in download() (resolves #11).
• Refactored tests to be environment-driven and CI-agnostic.

Compatibility

• Package supports PHP 7.x (7.2+) and PHP 8.x.